silly

nouns

a word used for misbehaving children
"don't be a silly"
silly
is a type of (narrower)
a young person of either sex
"she writes books for children"; "they're just kids"; "`tiddler' is a British term for youngster"
child, fry, kid, minor, nestling, nipper, shaver, small fry, tiddler, tike, tyke, youngster

adjectives

ludicrous, foolish
"gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books"
cockamamie, cockamamy, goofy, sappy, silly, wacky, whacky, zany
is derived from
silliness
lacking seriousness; given to frivolity
"a dizzy blonde"; "light-headed teenagers"; "silly giggles"
airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly
is derived from
silliness
inspiring scornful pity
"how silly an ardent and unsuccessful wooer can be especially if he is getting on in years"- Dashiell Hammett
pathetic, ridiculous, silly
is derived from
silliness
dazed from or as if from repeated blows
"knocked silly by the impact"; "slaphappy with exhaustion"
punch-drunk, silly, slaphappy