IPA: /ˈɡɔː.dɪ.nəs/
KK: /ˈɡɔːdɪnəs/
The quality of being excessively bright, showy, or flashy in appearance, often in a way that is considered unattractive or in bad taste.
The gaudiness of the decorations made the room feel overwhelming and uninviting.
Gaudiness is formed from "gaudy" (from Middle English *gaudie*, meaning showy or ostentatious) and the suffix "-ness" (meaning the state or quality of). The word describes the state of being showy or excessively bright in a way that lacks taste.
Think of something that is overly showy or bright ('gaudy') and remember that 'gaudiness' refers to the quality of being excessively showy.