1. Ludicrous, foolish
   "a silly idea";
   - goofy [informal], wacky, whacky, zany
    
2. Silly, frivolous, or lacking seriousness
   "Her silly behaviour made it hard to take her seriously";
   - airheaded [informal], 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 [informal]

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

Derived forms: sillier, silliest, sillies

See also: confused, daft [Brit, informal], dumb, foolish, frivolous, fuddled, imbecile, imbecilic, stupid, undignified

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

Encyclopedia: Silly, John