"giddier" in the adjective sense

1. dizzy, giddy, woozy, vertiginous

having or causing a whirling sensation liable to falling

"had a dizzy spell"

"a dizzy pinnacle"

"had a headache and felt giddy"

"a giddy precipice"

"feeling woozy from the blow on his head"

"a vertiginous climb up the face of the cliff"

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

lacking seriousness given to frivolity

"a dizzy blonde"

"light-headed teenagers"

"silly giggles"

Source: WordNet® (An amazing lexical database of English)

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