Which to use
“flee” is a verb and “fume” is a noun - they look or sound alike but fill different roles in a sentence.
- #9,469
- “flee” frequency rank
- #45,384
- “fume” frequency rank
- 54853
- confusion score
Side-by-Side Comparison
| Feature | flee | fume |
|---|---|---|
| Definition | To run away; to escape. | A gas or vapour/vapor that is strong-smelling or dangerous to inhale. |
Where the eye mixes flee and fume
Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. flee (CCVV) and fume (CVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Visual trap between flee and fume
These two trip readers on the page rather than in the ear: flee is /fliː/ while fume is /fjuːm/. 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 (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 54853, derived from the frequency rank of both members and their visual similarity.
flee is recorded at frequency rank #9,469, classified as averb, pronounced /fliː/. fume is at rank #45,384, tagged as anoun, pronounced /fjuːm/.
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 54853, this pair ranks #137,991 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of flee vs fume
Shared letters: ef. Private to "flee": l. Private to "fume": mu.
"flee" · 4 letters · shape CCVV · "fume" · 4 letters · shape CVCV
Known mistypes of this pair
Frequently Asked Questions
Can "flee" and "fume" be used interchangeably?
Which is more common, "flee" or "fume"?
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 "flee" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "fume" - compare definitions side by side with the headword page. Word entry
- This pair ranks #137,991 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flee" and "fume" also get mixed up with nearby pairs, the highest-scored neighbour is "FOMO vs fume". 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 #137,991 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.