IPA: /ˈpraʊdɪst/
KK: /praʊdɪst/
Feeling deep pleasure or satisfaction as a result of one's own achievements, qualities, or possessions; the highest degree of this feeling.
She felt the proudest when she received the award for her hard work.
Comparative: prouder
Superlative: proudest
Proudest → It is formed from "proud" (from Old English *prūde*, meaning having a high opinion of oneself) and the suffix "-est" (used to form the superlative degree). The word "proudest" means having the highest degree of pride or self-satisfaction.
Think of someone who feels the most self-satisfaction or has the highest opinion of themselves — that's what proudest means.