cool

Definition

Of a mildly low temperature.

Etymology

From Middle English cool, from Old English cōl (“cool, cold, tranquil, calm”), from Proto-West Germanic *kōl(ī), from Proto-Germanic *kōlaz, *kōluz (“cool”), from Proto-Indo-European *gel- (“cold”). Cognate with Saterland Frisian köil (“cool”), West Frisian koel (“cool”), Dutch koel (“cool”), Limburgish kool (“cool”), German Low German köhl (“cool”), German kühl (“cool”). Related to cold.

Example Sentences

• "I like cool weather the most 'cause it's not too hot to wear a jacket but I won't be too cold in my shorts."
• "The day was cool and snappy for August, and the Rise all green with a lavish nature. Now we plunged into a deep shade with the boughs lacing each other overhead, and crossed dainty, rustic bridges over the cold trout-streams, the boards giving back the clatter of our horses' feet:[…]."
• "Many exoplanets have been found orbiting dwarf stars that are much cooler and smaller than our sun, such as the famed TRAPPIST-1 system and its seven planets, announced in 2017."