IPA: /ˈɡlɑːsi.ɪst/
KK: /ˈɡlɑːsiɪst/
The most shiny or reflective surface, often used to describe something that has a smooth and polished appearance.
Her hair looked the glossiest after she used the new conditioner.
Comparative: glossier
Superlative: glossiest
Glossiest → It is formed from "gloss" (from Greek "glōssa", meaning tongue or language, but in this context refers to a shiny surface) and the suffix "-iest" (meaning most). The word "glossiest" means having the most shine or luster.
Think of something that is the "most shiny" or "most lustrous" — that's what "glossiest" means.
No commonly confused words.