1. silly

a word used for misbehaving children

Example Sentences:
'don't be a silly'

2. cockamamie, cockamamy, goofy, sappy, silly, wacky, whacky, zany

ludicrous, foolish

Example Sentences:
'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
• wacky
• whacky
• zany

3. airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly

lacking seriousness; given to frivolity

Example Sentences:
'a dizzy blonde'
'light-headed teenagers'
'silly giggles'

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

4. pathetic, ridiculous, silly

inspiring scornful pity

Example Sentences:
'how silly an ardent and unsuccessful wooer can be especially if he is getting on in years'

• pathetic
• ridiculous

5. punch-drunk, silly, slaphappy

dazed from or as if from repeated blows

Example Sentences:
'knocked silly by the impact'
'slaphappy with exhaustion'

• punch-drunk
• slaphappy