IPA: /ˈɡræsiəst/
KK: /ˈgræsɪəst/
Having the most grass; covered with or resembling grass to the highest degree.
The grassiest part of the park is perfect for picnics.
Comparative: grassier
Superlative: grassiest
Grassiest → It is formed from "grass" (from Old English *græs*, meaning herb or plant) and "-iest" (a superlative suffix indicating the most). The word "grassiest" means having the most grass or being the most covered with grass.
Think of 'grass' as the plant and '-iest' meaning the most. So, when you hear 'grassiest', imagine a place that is covered with the most grass.