IPA: /ˈplɛzəntɪst/
KK: /ˈplɛzəntɪst/
The most enjoyable or agreeable; giving a sense of happiness or satisfaction.
The weather today is the pleasantest it has been all week.
Comparative: more pleasant
Superlative: pleasantest
Pleasantest → It is formed from "pleasant" (from Old French *plaisant*, meaning pleasing or agreeable) and the superlative suffix "-est" (meaning most). The word "pleasantest" means the most pleasing or agreeable.
Think of something that is the "most pleasing" — the root "pleasant" means pleasing, and adding "-est" shows it is the highest degree.