flawvsflyTell them apart

Which to use

“flaw” and “fly” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#12,978
“flaw” frequency rank
#1,827
“fly” frequency rank
14805
confusion score

Side-by-Side Comparison

Feature flaw fly
Definition A flake, fragment, or shiver. Any insect of the order Diptera; characterized by having two wings (except for some wingless species), also called true flies.

Where the eye mixes flaw and fly

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
flaw
3 ch
fly

Why the eye confuses flaw with fly

A purely visual mix-up. flaw (/flɔː/) and fly (/flaɪ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 14805, derived from the frequency rank of both members and their visual similarity.

flaw is recorded at frequency rank #12,978, classified as anoun, pronounced /flɔː/. fly is at rank #1,827, tagged as anoun, pronounced /flaɪ/.

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 14805, this pair ranks #467,845 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of flaw vs fly

Shared letters: fl. Private to "flaw": aw. Private to "fly": y.

"flaw" · 4 letters · shape CCVC  ·  "fly" · 3 letters · shape CCV

Known mistypes of this pair

  • flawfalw · fflaw · flaww · fllaw · flwa · lfaw

Frequently Asked Questions

Can "flaw" and "fly" be used interchangeably?
No. They are said differently (/flɔː/ versus /flaɪ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "flaw" or "fly"?
"fly" is the more common of the two: it sits at frequency rank #1,827 in our English list, against #12,978 for "flaw". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "flaw" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fly" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #467,845 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "flaw" and "fly" also get mixed up with nearby pairs, the highest-scored neighbour is "flail vs flaw". 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 #467,845 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