IPA: /ˈtʃɪliər/
KK: /ˈtʃɪliər/
Having a lower temperature than usual, making it feel cold or uncomfortable.
The weather is chillier today than it was yesterday.
Comparative: chillier
Superlative: chilliest
Chillier → It is formed from "chill" (from Old English *ciele*, meaning cold) and the comparative suffix "-ier" (meaning more). The word "chillier" means more cold or having a greater degree of chilliness.
Think of the word 'chill' which means cold, and remember that 'chillier' means more cold.