cool

The word “cool” means slightly cold; at a mildly low temperature. In plain terms, mildly cold in temperature, or (informally) calm, fashionable, or simply "okay.".

“Cool” is pronounced kool (/kul/ in IPA).

Here is “cool” used in a sentence: “A cool breeze came off the lake in the evening.”

Depending on how it is used, “cool” can be an adjective, a noun and a verb.

The word “cool” comes from Old English. From Old English cōl, going back through Proto-Germanic to a root meaning "to freeze" or "be cold" — the same ancient root that gave English the word "cold.".

“Cool” is a very common word in modern English, usually learned at around the A1 level.

“Cool” has 7 distinct senses listed in this dictionary. The most common is: slightly cold; at a mildly low temperature.

Both describe low temperatures, but 'cool' is milder than 'cold.' Cool means slightly chilly, often pleasant — a cool breeze on a warm day. Cold means a much lower, sometimes uncomfortable temperature. Cool sits between warm and cold on the scale, suggesting a gentle, refreshing lack of heat.

They lie on opposite sides of comfortable room temperature. 'Cool' means slightly cold — a mild, refreshing lack of heat, like a cool evening. 'Warm' means slightly hot — a gentle, comfortable heat, like a warm afternoon. Cool leans toward cold, warm leans toward hot, and both are moderate.

A cool breeze, a cool drink of water, a cool autumn morning, or the cool side of a pillow are all mildly cold in a pleasant way. A cellar stays cool because it is shaded and below ground. In each, the temperature is refreshingly low but not truly cold.