Description

Fun commonly functions as an adjective ("I had a fun time") and as a noun ("Let’s have some fun"), and somewhat less commonly as a verb ("I’m just funning you"). In its role as a noun the word is a noncount noun ("a noun that denotes a homogeneous substance or a concept without subdivisions and that in English is preceded in indefinite singular constructions by some rather than a or an"), and does not have a plural form.