Chilliness is a related term of frostiness.
As nouns the difference between chilliness and frostiness
is that chilliness is the state or sensation of being chilly; a disagreeable sensation of coldness while frostiness is the quality of being frosty.
chilliness
English
Noun
(-)
The state or sensation of being chilly; a disagreeable sensation of coldness.
References
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frostiness
English
Noun
(-)
The quality of being frosty