IPA: /ˌoʊvərˈdɛkəˌreɪʃən/
KK: /oʊvərˌdɛkəˈreɪʃən/
The act of decorating something too much, making it look overly ornate or complicated.
The overdecoration of the room made it feel cluttered and uncomfortable.
Overdecoration → It is formed from "over-" (meaning excessively) and "decoration" (from Latin "decoratio", meaning to adorn or embellish). The word refers to the act of excessively adorning or embellishing something.
Think of 'over' meaning excessively and 'decoration' meaning adornment — this helps you remember that overdecoration means to adorn something too much.