IPA: /ˈɡɪdiɪst/
KK: /ˈɡɪd.i.ɪst/
Feeling very happy and excited, often to the point of being unable to think clearly.
She felt the giddiest joy when she received the good news.
Comparative: giddier
Superlative: giddiest
Giddiest → It is formed from "giddy" (from Old English "gidig", meaning having a whirling sensation or being light-headed) and the suffix "-est" (indicating the superlative form). The word "giddiest" means the most light-headed or the most dizzy.
Think of feeling light-headed or dizzy ('giddy') and remember that 'giddiest' means the most dizzy or light-headed.
No commonly confused words.