fouvsfunWhat's the difference?

Quick tell: fou is a adjective, fun is a noun, so they fill different roles in a sentence.

Which to use

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

#48,244
“fou” frequency rank
#502
“fun” frequency rank
48746
confusion score

Side-by-Side Comparison

Feature fou fun
Definition Drunk. Amusement, enjoyment or pleasure.

Where the spellings diverge

Shared letters are muted; the letters that actually set fou and fun apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch
fou
3 ch
fun

Spelling & Dictionary Insight

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: fou is anadjective and funanoun. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 48746, derived from the frequency rank of both members and their visual similarity.

fou is recorded at frequency rank #48,244, classified as anadj. fun is at rank #502, tagged as anoun, pronounced /fʌn/.

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 48746, this pair ranks #190,145 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of fou vs fun

Shared letters: fu. Private to "fou": o. Private to "fun": n.

"fou" · 3 letters · shape CVV  ·  "fun" · 3 letters · shape CVC

Frequency comparison

fou#48,244
fun#502

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "fou" and "fun" be used interchangeably?
No - they are not even the same part of speech. "fou" is an adjective and "fun" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "fou" or "fun"?
"fun" is the more common of the two: it sits at frequency rank #502 in our English list, against #48,244 for "fou". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

Remembering fou vs fun

The fastest way to pick the right one every time.

  • Check the role first: if you need an adjective, it's “fou”; for a noun, it's “fun”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “fou” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list