IPA: /ˈtʃɪlɪnəs/
KK: /ˈtʃɪlɪnəs/
The condition of feeling cold or having a low temperature, often causing discomfort.
The chilliness of the evening made everyone grab their jackets.
Chilliness → It is formed from "chill" (from Old English *ciele*, meaning cold) and "-ness" (meaning the state or quality of). The word "chilliness" refers to the state of being cold or the quality of being chilly.
Think of the word 'chill' which means cold, and remember that 'chilliness' describes the state of being cold.