Which to use
“fleas” is a noun and “frees” is a verb - they look or sound alike but fill different roles in a sentence.
- #25,061
- “fleas” frequency rank
- #22,978
- “frees” frequency rank
- 48039
- confusion score
Side-by-Side Comparison
| Feature | fleas | frees |
|---|---|---|
| Definition | plural of flea | third-person singular simple present indicative of free |
Where the eye mixes fleas and frees
Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. fleas and frees follow the identical consonant-vowel pattern (CCVVC). Same shape at a glance is often the real trap, independent of shared letters.
Look-alike desk: fleas vs frees
These two trip readers on the page rather than in the ear: fleas is /ˈfliːz/ while frees is /fɹiːz/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs verb), which is usually the fastest check. Our composite confusion score for this pair is 48039, derived from the frequency rank of both members and their visual similarity.
fleas is recorded at frequency rank #25,061, classified as anoun, pronounced /ˈfliːz/. frees is at rank #22,978, tagged as averb, pronounced /fɹiːz/.
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 48039, this pair ranks #196,908 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of fleas vs frees
Shared letters: efs. Private to "fleas": al. Private to "frees": r.
"fleas" · 5 letters · shape CCVVC · "frees" · 5 letters · shape CCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "fleas" for "frees" ever safe?
Which is more common, "fleas" or "frees"?
Useful next steps
Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.
- Full dictionary entry for "fleas" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "frees" - compare definitions side by side with the headword page. Word entry
- This pair ranks #196,908 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "fleas" and "frees" also get mixed up with nearby pairs, the highest-scored neighbour is "fleas vs fleck". 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 #196,908 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.