WordWeb Online

1. Ludicrous, foolish
   "a silly idea";
   - cockamamie [N. Amer], cockamamy [N. Amer], goofy, sappy, wacky, whacky, zany
    
2. Lacking seriousness; given to frivolity
   "silly giggles";
   - airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded
    
3. Inspiring scornful pity
   "how silly an ardent and unsuccessful wooer can be especially if he is getting on in years";
   - pathetic, ridiculous
    
4. Dazed from or as if from repeated blows
   "knocked silly by the impact";
   - punch-drunk, slaphappy

1. A word used for misbehaving children
   "don't be a silly"

Derived forms: sillier, silliest, sillies

See also: confused, daft, dumb, foolish, frivolous, stupid, undignified

Type of: child, fry, kid, minor, nestling, nipper, shaver, small fry, tiddler [Brit], tike, tyke, wean [UK, Ireland], youngster

Encyclopedia: Silly Silly, Belgium