say it: fuhn
fun is a noun meaning "activities that are enjoyable or amusing". It carries 4 recorded senses.
activities that are enjoyable or amusing
“I do it for the fun of it”
“he is fun to have around”
a disposition to find (or make) causes for amusement
“her playfulness surprised me”
“he was fun to be with”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for fun come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.