Which to use
“flees” is a verb and “flier” is an adjective - they look or sound alike but fill different roles in a sentence.
- #33,653
- “flees” frequency rank
- #31,989
- “flier” frequency rank
- 65642
- confusion score
Side-by-Side Comparison
| Feature | flees | flier |
|---|---|---|
| Definition | third-person singular simple present indicative of flee | comparative form of fly: more fly |
Letter map: flees vs flier
Shared letters muted; letters that set flees and flier apart highlighted. Shared run: 3. flees and flier follow the identical consonant-vowel pattern (CCVVC). Same shape at a glance is often the real trap, independent of shared letters.
Part-of-speech tell for flees / flier
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: flees is averb and flieranadjective. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 65642, derived from the frequency rank of both members and their visual similarity.
flees is recorded at frequency rank #33,653, classified as averb, pronounced /ˈfliːz/. flier is at rank #31,989, tagged as anadj.
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 65642, this pair ranks #71,763 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of flees vs flier
Shared letters: efl. Private to "flees": s. Private to "flier": ir.
"flees" · 5 letters · shape CCVVC · "flier" · 5 letters · shape CCVVC
Known mistypes of this pair
Frequently Asked Questions
Is swapping "flees" for "flier" ever safe?
In ordinary English text, does "flees" or "flier" show up more?
Useful next steps
Pair "flees" vs "flier" is on the table, pick a follow-up below.
- Full dictionary entry for "flees" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flier" - compare definitions side by side with the headword page. Word entry
- This pair ranks #71,763 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "flees" and "flier" also get mixed up with nearby pairs, the highest-scored neighbour is "fleck vs flees". 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 #71,763 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.