definition of
silly

[1] #1 silly s. [cockamamie, cockamamy, goofy, sappy, wacky, whacky, zany] ludicrous, foolish; "gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books". wn

[2] #2 silly s. [airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded] lacking seriousness; given to frivolity; "a dizzy blonde"; "light-headed teenagers"; "silly giggles". wn

[3] #3 silly n. a word used for misbehaving children; "don't be a silly". wn

[4] #4 silly s. [pathetic, ridiculous] inspiring scornful pity; "how silly an ardent and unsuccessful wooer can be especially if he is getting on in years"- Dashiell Hammett. wn

[5] #5 silly s. [punch-drunk, slaphappy] dazed from or as if from repeated blows; "knocked silly by the impact"; "slaphappy with exhaustion". wn