Filter Words in Writing: The Complete 2026 Guide ✍️

You can cut most filter words in writing with a single find-and-replace pass — and your prose will get noticeably closer to your character in an afternoon.

In this guide, you’ll learn:

• What filter words are and the 40+ word list to search for
• Before-and-after rewrites that show the difference on the page
• The five-pass editing method that catches them without flattening your voice
• When a filter word is the right call and cutting it makes your writing worse

Here’s the whole process, starting with the definition.

What Are Filter Words in Writing?

Filter words — verbs of perception or cognition that report a character’s experience secondhand instead of rendering it directly, placing the narrator between the reader and the scene.

They are almost always sensory or mental verbs: saw, heard, felt, noticed, watched, realized, knew, wondered, decided, remembered. When you write “she heard the door slam,” the reader has to process two events — the slam, and her hearing it. When you write “the door slammed,” there is only the slam.

That extra step is the filter. It is a pane of glass between your reader and the moment.

Look at the difference:

Notice what happens in the right column. The sentence gets shorter, the verb gets stronger, and the subject shifts from the character to the world. That last shift is the real prize.

The Complete Filter Words List

Here is the working list. Search for each one — and remember that most appear in both tenses, so if you search “saw” you also need to search “see” and “seeing.”

Sight saw, see, seeing, look, looked, looking, watch, watched, notice, noticed, observe, observed, glimpse, glimpsed, spot, spotted, gaze, stare

Sound heard, hear, hearing, listen, listened, sounded, sounds like

Touch, taste, smell felt, feel, feeling, touched, tasted, taste, smelled, smell, sensed, sense

Thought and cognition thought, think, knew, know, realized, realize, wondered, wonder, decided, decide, remembered, remember, considered, believed, understood, recognized, imagined, assumed, noted, figured

Ability and appearance hedges could see, could hear, could feel, seemed to, appeared to, was able to, began to, started to, tried to

That last group deserves its own warning. “Began to walk” is almost never better than “walked,” and “seemed to” is a hedge that quietly tells your reader you’re not confident about your own scene.

Combined, these words show up in first drafts at a startling rate. In a 90,000-word manuscript, finding 600 to 900 instances is normal. Cutting even half of them removes hundreds of words of dead weight and pulls the camera meaningfully closer.

Why Do Filter Words Weaken Your Writing?

Filter words weaken your writing because they convert experience into report. Instead of letting the reader stand inside the scene, they place a narrator on the page describing what the character is doing with their senses. The result is more words, weaker verbs, and less immersion — the exact opposite of show, don’t tell.

Three specific costs:

1. They steal the verb slot. Every sentence has one prime position for a strong verb. “She saw the ship burning” spends it on saw — a verb with no image in it. “The ship burned” spends it on burned. You only get one chance per sentence, and a filter word wastes it.

2. They add words that do nothing. “He felt a wave of nausea rise in his stomach” is eleven words. “Nausea rose in him” is four. The other seven were bookkeeping.

3. They break point of view. If you have established that we are in Jim’s head, telling us Jim saw something reminds the reader that someone is narrating. Deep third person limited works precisely because the reader forgets there’s a narrator at all.

Filter Words and Psychic Distance

This is the part most articles skip, and it’s the reason filter words matter more than a simple word-count trim.

In The Art of Fiction, John Gardner named the concept psychic distance — the felt distance between the reader and the events of the story. The University of Nevada, Reno’s Writing Center lays out Gardner’s five-point scale, which moves from the far end of the lens to the very close.

Roughly, it looks like this:

Most contemporary fiction lives at levels 3 and 4, dipping to 5 in high-emotion moments. Filter words are the mechanism that keeps you pinned at level 4 when you meant to be at 5.

Here’s the practical takeaway: filter words are not a mistake, they are a distance setting. When you cut “he knew” from level 4, the sentence drops to level 5 on its own. When you add it back, you pull the camera out. Once you see it as a dial rather than a rule, you stop cutting them blindly and start using them on purpose.

That framing also explains why scene transitions often need filter words. Moving from one location to another usually means zooming out from 5 to 3, holding, then zooming back in. A “she remembered” is a perfectly good handle for that move.

Filter Words vs. Telling: What’s the Difference?

Filter words and telling are related but not the same. Telling summarizes an experience (“she was terrified”). Filtering reports a specific perception through the character (“she felt her heart hammer”). Filtering is a species of telling — it’s showing, then draping a layer of report over it.

The tell is in what you can cut. If removing the phrase leaves a concrete image behind, it was a filter word. If removing it leaves nothing, it was telling and you need to write the scene.

• “She felt her heart hammer” → cut she felt → “Her heart hammered.” Still an image. Filter word.
• “She was terrified” → cut she was → “Terrified.” No image. Telling. You need a new sentence.

This distinction matters because writers who conflate the two end up deleting phrases and leaving holes. Cutting a filter word should never lose information. If it does, you didn’t have a filter word problem, you had a showing versus telling problem.

How to Find and Remove Filter Words: The Five-Pass Method

Do not do this while drafting. MasterClass and virtually every editor agree on this point: hunting filter words in a first draft suffocates the draft. Write badly and fast, then filter.

Pass 1: Highlight, don’t delete

Open your manuscript. Use Find and Highlight (not Find and Replace) on each word in the list above. Color them all the same. Then close the document and open it fresh.

You will see clusters. Filter words bunch up in specific scenes — usually the ones you wrote when you were tired or unsure of the POV. Those clusters are your real targets, not the scattered singles.

Pass 2: Flip the subject

For every highlighted instance, ask what the sentence would look like with the world as the subject instead of the character.

• “Marta noticed a crack running down the plaster.” → “A crack ran down the plaster.”
• “He could feel the rope biting into his palms.” → “The rope bit into his palms.”

Nine times out of ten, this single move fixes it and produces a better verb as a side effect.

Pass 3: Convert thought filters to direct thought

Cognition filters — thought, wondered, realized, knew — usually want to become the thought itself.

• “She wondered whether he had ever meant any of it.” → “Had he ever meant any of it?”
• “He realized the money was gone.” → “The money was gone.”

That second rewrite does something the original couldn’t: it lets the reader realize it at the same instant the character does. The filter word was announcing the discovery before delivering it.

Pass 4: Ask the subtraction question

For each remaining instance, ask: what information do I lose if I cut this? If the answer is “nothing,” cut it. If the answer is something real — that the character was paying attention, that a second character was present, that time passed — keep it.

TCK Publishing frames this well: some filter words carry essential context, and cutting them creates ambiguity, not immediacy.

Pass 5: Read the scene aloud

Filter-word removal can over-tighten prose into a staccato rhythm where every sentence is subject-verb-object. Reading aloud catches it. If three unfiltered sentences in a row start clacking, put one filter word back for rhythm. Prose is sound before it’s anything else.

When Should You Keep Filter Words?

You should keep filter words when the act of perceiving is itself the story beat. If it matters that a character noticed, chose to look, failed to hear, or misread what they saw, the filter word is carrying meaning and cutting it destroys the point.

Keep the filter word when:

• The perception is the plot. “He watched her slip the envelope into her coat” is not the same as “She slipped the envelope into her coat.” One of them means he now knows.
• You’re marking a POV boundary. In multi-POV or first person narration, a filter word can clarify whose head we’re in after a section break.
• You need distance on purpose. Trauma, dissociation, and grief often read truer at level 4. Pulling the camera back is a legitimate emotional choice.
• The character is unreliable. “She thought he was smiling” plants doubt that “He smiled” cannot.
• You’re managing rhythm. Perfectly unfiltered prose gets monotonous. Variation is craft.

The goal is never zero. An unfiltered manuscript reads as relentlessly as a filtered one reads as flat. Aim to cut the reflexive ones and keep the deliberate ones.

Filter Words in Nonfiction and Memoir

Filter words behave differently outside fiction, and the standard advice can mislead you here.

In memoir, filter words are often load-bearing. The tension between what you perceived then and what you understand now is the whole engine of the form. “I thought he was joking” is doing narrative work that “He was joking” cannot do — it marks the gap between past self and present self.

In business and how-to nonfiction, the culprits shift. You’ll see I believe, I think, it seems, one could argue, it appears that. These are hedges rather than perception filters, and they cost you authority. Cut them and your sentences become claims.

• “I think the best approach is to outline first.” → “Outline first.”
• “It seems that most authors underestimate revision.” → “Most authors underestimate revision.”

The same subtraction test applies: if cutting the hedge doesn’t change your actual meaning, it was never doing anything but softening you.

Does AI Writing Software Produce Filter Words?

Yes — heavily. Large language models are trained on enormous quantities of average prose, and average prose is filtered prose. AI-generated fiction reliably overproduces felt, saw, could see, seemed to, began to, and realized, because those constructions are statistically common.

This is a solvable problem, not a reason to avoid AI drafting. Filter words are the easiest category of weak writing to catch mechanically, which makes them a perfect fit for a draft-then-revise workflow.

Our Pick — Chapter

Chapter drafts full-length books chapter by chapter from your outline, then lets you revise scene by scene rather than fighting a single giant text box. Because filter-word cleanup is a targeted pass, having your manuscript already segmented by scene makes the work fast — you run the five passes on one scene at a time instead of scrolling 90,000 words.

Best for: Authors who want a complete draft they can then edit hard, rather than a blank page. Pricing: $97 one time, 2 books included (fiction or nonfiction), 30-day money-back guarantee Why we built it: 2,147+ authors have written books on Chapter, and the ones who publish are the ones who treat the AI draft as a draft — which is exactly what a filter-word pass is for.

If you’re drafting with AI, budget a dedicated filter-word pass into your revision plan. It is the single highest-yield edit for making machine-assisted prose read like a person wrote it.

Common Mistakes to Avoid

• Find-and-replacing blindly. Deleting every “felt” without reading the sentence produces grammatical wreckage and loses real information.
• Doing it in the first draft. You will stall. Filter words are a revision concern, full stop.
• Cutting the word but keeping the structure. “She felt sadness wash over her” → “Sadness washed over her” is better, but it’s still an abstraction. The strongest version names what her body did.
• Chasing zero. A manuscript with no filter words at all reads mechanical and airless.
• Ignoring the “could” family. Could see, could hear, could feel are filter words wearing a second coat. They’re the ones writers miss most.
• Confusing filter words with adverbs or dialogue tags. They’re separate problems with separate fixes; treating them as one pass means doing all three badly.

How Long Does a Filter-Word Pass Take?

A filter-word pass takes roughly four to eight hours for a full novel, or about 15 to 20 minutes per 1,000 words on your first attempt. The highlight step is fast — under 20 minutes for the whole manuscript. The judgment calls are what take time, and they get much quicker after your first book.

Do it as a standalone pass. Combining it with line editing means you’ll do both jobs at half attention.

Will Removing Filter Words Change My Voice?

Removing filter words changes your narrative distance, not your voice. Voice lives in diction, syntax, rhythm, and what you choose to notice — none of which a filter word controls. What changes is proximity: the reader stands closer to your character.

If a filter-word pass makes your prose feel like someone else wrote it, you probably over-cut. Restore the instances that were doing rhythmic or structural work and the voice comes back.

What Tools Find Filter Words Automatically?

Several tools flag filter words automatically, though none of them exercise judgment for you:

• ProWritingAid has a dedicated “Sticky Sentences” and pacing report that surfaces filter constructions.
• AutoCrit is built for fiction and flags filter words as a named category.
• Word or Google Docs Find-and-Highlight costs nothing and works as well as anything, because the hard part is deciding, not finding.
• Fictionary flags them at the scene level, which pairs well with the cluster approach in Pass 1.

Use a tool for detection and your own ear for the decision. Every filter word a tool flags is a question, not a verdict.

FAQ

What are filter words in writing?

Filter words in writing are verbs of perception and thought — saw, heard, felt, knew, realized, noticed — that report a character’s experience instead of showing it directly. They place the narrator between reader and scene, adding narrative distance and consuming the sentence’s strongest verb slot.

What is the full list of filter words?

The core filter word list covers sensory verbs (saw, heard, felt, smelled, tasted, watched, noticed), cognitive verbs (thought, knew, realized, wondered, remembered, decided), and hedges (could see, seemed to, began to, tried to). Search each in both past and present tense.

Are filter words always bad?

Filter words are not always bad. Keep them when the act of perceiving is the story beat, when marking a point-of-view boundary, when you deliberately want distance, or when an unreliable narrator’s perception should be questioned. Reflexive filter words hurt; deliberate ones work.

What is the difference between filter words and telling?

The difference is what remains after you cut. Removing a filter word leaves a concrete image behind (“she felt her heart hammer” → “her heart hammered”). Removing telling leaves nothing (“she was terrified” → nothing), which means you must write the scene instead.

How do filter words affect deep POV?

Filter words are the main obstacle to deep POV. Deep point of view works by removing every trace of a narrator, so the reader occupies the character’s consciousness directly. Each filter word reinserts that narrator, pulling the reader from immediate experience back to secondhand report.

Should I remove filter words from dialogue?

No. Characters speak the way people speak, and people say “I saw,” “I thought,” and “I felt” constantly. Filter words in dialogue are characterization, not weak prose. Confine your pass to narration and interiority.

Related Reading

• Show, Don’t Tell: Definition and Examples
• Third Person Limited Point of View
• Active vs. Passive Voice
• Purple Prose: What It Is and How to Fix It
• Narrative Techniques Every Writer Should Know
• Another Word for “Very”
• How to Write an Emotional Scene

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Sources and further reading: University of Nevada, Reno Writing & Speaking Center — Psychic Distance in Creative Writing · MasterClass — How to Avoid Unnecessary Filter Words · TCK Publishing — What Are Filter Words? · Jericho Writers — Narrative Distance Definition · The History Quill — Narrative Distance and How to Control It · Darling Axe — Unfiltered Narrative · AJ Collins — What Are Filter Words?