flopvsfouTell them apart

Quick tell: flop is a verb, fou is an adjective, so they fill different roles in a sentence.

Which to use

“flop” is a verb and “fou” is an adjective - they look or sound alike but fill different roles in a sentence.

#13,720
“flop” frequency rank
#48,244
“fou” frequency rank
61964
confusion score

Side-by-Side Comparison

Feature flop fou
Definition To fall heavily due to lack of energy. Drunk.

Letter map: flop vs fou

Shared letters muted; letters that set flop and fou apart highlighted. Shared run: 2. flop runs 4 letters (CCVC) against fou's 3 (CVV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
flop
3 ch
fou

Grammar separator: flop vs fou

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: flop is averb and fouanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 61964, derived from the frequency rank of both members and their visual similarity.

flop is recorded at frequency rank #13,720, classified as averb, pronounced /flɒp/. fou is at rank #48,244, 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 61964, this pair ranks #91,124 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of flop vs fou

Shared letters: fo. Private to "flop": lp. Private to "fou": u.

"flop" · 4 letters · shape CCVC  ·  "fou" · 3 letters · shape CVV

Known mistypes of this pair

  • flop ← fflop · fllop · flopp · flpo · folp · lfop

Frequently Asked Questions

Can "flop" and "fou" be used interchangeably?
No - they are not even the same part of speech. "flop" is a verb and "fou" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "flop" or "fou" show up more?
"flop" is the more common of the two: it sits at frequency rank #13,720 in our English list, against #48,244 for "fou". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

You've compared "flop" and "fou". Here's where to go from here.

  • Full dictionary entry for "flop" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fou" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #91,124 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "flop" and "fou" also get mixed up with nearby pairs, the highest-scored neighbour is "FOMO vs fou". 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 #91,124 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