IPA: /ˈkʊʃiɪst/
KK: /ˈkʊʃiɪst/
The most comfortable or softest, often used to describe a place or situation that is very easy and pleasant.
After a long day, I love to relax on the cushiest sofa in the living room.
Comparative: cushier
Superlative: cushiest
Cushiest → It is formed from "cushion" (from Old French *coissin*, meaning a soft pad or pillow) and the superlative suffix "-est" (meaning most). The word "cushiest" means the most soft or comfortable, referring to something that provides the greatest comfort.
Think of a 'cushion' that is the 'most' comfortable — that's what 'cushiest' means.