Which to use
“FES” is a noun and “flees” is a verb - they look or sound alike but fill different roles in a sentence.
- #39,812
- “FES” frequency rank
- #33,653
- “flees” frequency rank
- 73465
- confusion score
Side-by-Side Comparison
| Feature | FES | flees |
|---|---|---|
| Definition | Initialism of floppy eyelid syndrome | third-person singular simple present indicative of flee |
Letter map: FES vs flees
Shared letters muted; letters that set FES and flees apart highlighted. Shared run: 3. FES runs 3 letters (CVC) against flees's 5 (CCVVC) - the length gap alone is often enough to separate them once you know to check it.
Grammar separator: FES vs flees
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: FES is anoun and fleesaverb. On the page they differ by 2 letter(s) in length. Our composite confusion score for this pair is 73465, derived from the frequency rank of both members and their visual similarity.
FES is recorded at frequency rank #39,812, classified as anoun. flees is at rank #33,653, tagged as averb, pronounced /ˈfliːz/.
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 73465, this pair ranks #39,524 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of FES vs flees
Shared letters: efs. Private to "FES": -. Private to "flees": l.
"FES" · 3 letters · shape CVC · "flees" · 5 letters · shape CCVVC
Known mistypes of this pair
- flees ← fflees · fleess · fles · flese · fllees · lfees
Frequently Asked Questions
Can "FES" and "flees" be used interchangeably?
In ordinary English text, does "FES" or "flees" show up more?
What to do next
Pair "FES" vs "flees" is on the table, pick a follow-up below.
- Full dictionary entry for "FES" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "flees" - compare definitions side by side with the headword page. Word entry
- This pair ranks #39,524 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "FES" and "flees" also get mixed up with nearby pairs, the highest-scored neighbour is "FES vs foh". 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 #39,524 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.