■ adjective
1》 ( ~ of ) having an affection or liking for.
↘affectionate; loving: ~ memories.
2》 (of a hope or belief) foolishly optimistic; naive.
Derivatives
~ly adverb
~ness noun
Origin
ME (in the sense 'infatuated, foolish'): from obs. fon 'a fool, be foolish', of unknown origin; cf. fun .