IPA: /ˈɡɪd.i.nəs/
KK: /ˈɡɪd.i.nəs/
A feeling of light-headedness or dizziness, often accompanied by excitement or joy.
After spinning around in circles, I felt a wave of giddiness wash over me.
Giddiness → The word originates from Middle English 'giddy' (meaning light-headed or dizzy) and the suffix '-ness' (meaning the state or quality of). Giddiness refers to the state of being light-headed or dizzy.
Think of feeling 'light-headed' or 'dizzy' — that's what giddiness means, and the '-ness' just indicates the state of that feeling.