1. (

• goofy ,
• silly ,
• wacky ,
• whacky ,
• zany

) ludicrous, foolish; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books" ;

2. (

• airheaded ,
• dizzy ,
• empty-headed ,
• featherbrained ,
• giddy ,
• light-headed ,
• lightheaded ,
• silly

) lacking seriousness; given to frivolity; "a dizzy blonde"; "light-headed teenagers"; "silly giggles" ;

3. (

• pathetic ,
• ridiculous ,
• silly

) inspiring scornful pity; "how silly an ardent and unsuccessful wooer can be especially if he is getting on in years"- Dashiell Hammett ;

4. (

• punch-drunk ,
• silly ,
• slaphappy

) dazed from or as if from repeated blows; "knocked silly by the impact"; "slaphappy with exhaustion"; "punch-drunk with love" ;