filingvsfoolingTell them apart

Quick tell: filing is a noun, fooling is a verb, so they fill different roles in a sentence.

Which to use

“filing” is a noun and “fooling” is a verb - they look or sound alike but fill different roles in a sentence.

#6,572
“filing” frequency rank
#19,339
“fooling” frequency rank
25911
confusion score

Side-by-Side Comparison

Feature filing fooling
Definition Any particle that has been removed by a file or similar implement; a shaving. present participle and gerund of fool

Where the eye mixes filing and fooling

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

6 ch
filing
7 ch
fooling

Why the eye confuses filing with fooling

These two trip readers on the page rather than in the ear: filing is /ˈfaɪ.lɪŋ/ while fooling is /ˈfuːlɪŋ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 25911, derived from the frequency rank of both members and their visual similarity.

filing is recorded at frequency rank #6,572, classified as anoun, pronounced /ˈfaɪ.lɪŋ/. fooling is at rank #19,339, tagged as averb, pronounced /ˈfuːlɪŋ/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 25911, this pair ranks #390,707 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of filing vs fooling

Shared letters: fgiln. Private to "filing": -. Private to "fooling": o.

"filing" · 6 letters · shape CVCVCC  ·  "fooling" · 7 letters · shape CVVCVCC

Known mistypes of this pair

  • filingffiling · fiilng · filign · filingg · filinng · filnig · fliing · ifling
  • foolingffooling · foling · foloing · fooilng · foolign · foolingg · foolinng · foolling

Frequently Asked Questions

Can "filing" and "fooling" be used interchangeably?
No - they are not even the same part of speech. "filing" is a noun and "fooling" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "filing" or "fooling" show up more?
"filing" is the more common of the two: it sits at frequency rank #6,572 in our English list, against #19,339 for "fooling". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "filing" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fooling" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #390,707 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "filing" and "fooling" also get mixed up with nearby pairs, the highest-scored neighbour is "fondling vs fooling". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #390,707 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list