n.
light-hearted pleasure or amusement.
▸a source of fun:
people-watching is great fun.
▸playfulness or good humour:
she's full of fun.
adj.
informal entertaining or enjoyable.
v.
(funs, funning, funned)
N. Amer. informal joke or tease.
Phrase
- in fun
not intended seriously. - make fun of
tease or laugh at in a mocking or unkind way.
Etymology
C17 (denoting a trick or hoax): from obs. fun ‘to cheat or hoax’, dial. var. of ME fon ‘make a fool of, be a fool’, rel. to fon ‘a fool’, of unknown origin; cf. fond.