Meaning : Lacking seriousness. Given to frivolity.
Example :
A dizzy blonde.
Light-headed teenagers.
Silly giggles.
Synonyms : airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded
Meaning : Inspiring scornful pity.
Example :
How silly an ardent and unsuccessful wooer can be especially if he is getting on in years.
Synonyms : pathetic, ridiculous
Meaning : Dazed from or as if from repeated blows.
Example :
Knocked silly by the impact.
Slaphappy with exhaustion.
Punch-drunk with love.
Synonyms : punch-drunk, slaphappy