cool: [OE] Cool comes from the same source as cold, namely Indo-European *gel-, *gol- (from which English also gets congeal, gel, and jelly). The Germanic descendants of this Indo- European base were *kal-, *kōl-. From these were derived the Germanic adjective *kōluz, which passed into Old English as cōl. Its use for ‘fashionable, hip’ is mid-20th-century, but its nonchalant application to large sums of money is of surprisingly long standing: ‘I just made a couple of bets with him, took up a cool hundred, and so went to the King’s Arms’, John Vanbrugh and Colly Cibber, The Provok’d Husband 1728. => cold, congeal, gel, jelly
cool (adj.)
Old English col "not warm" (but usually not as severe as cold), also, of persons, "unperturbed, undemonstrative," from Proto-Germanic *koluz (cognates: Middle Dutch coel, Dutch koel, Old High German kuoli, German kühl "cool," Old Norse kala "be cold"), from PIE root *gel- "cold, to freeze" (see cold (adj.)).
Applied since 1728 to large sums of money to give emphasis to amount. Meaning "calmly audacious" is from 1825. Slang use for "fashionable" is 1933, originally Black English; modern use as a general term of approval is from late 1940s, probably from bop talk and originally in reference to a style of jazz; said to have been popularized in jazz circles by tenor saxophonist Lester Young. Related: Coolly.
cool (n.)
c. 1400, "coldness, coolness," from cool (adj.). Meaning "one's self-control, composure" (the thing you either keep or lose) is from 1966.
cool (v.)
Old English colian, "to lose warmth," also figuratively, "to lose ardor," from the root of cool (adj.). Meaning "to cause to lose warmth" is from late 14c. Related: Cooled; cooling.
实用例句
1. Northbridge is a cool, calculating and clever criminal who could strike again.
诺思布里奇是个头脑冷静、诡计多端、阴险狡诈的罪犯，他可能还会犯案。
来自柯林斯例句
2. She made a fanning motion, pretending to cool herself off.
她做了个扇风的动作，假装想让自己凉快一点。
来自柯林斯例句
3. In warm weather, you should wear clothing that is cool and comfortable.
在热天里，应该穿凉快舒适的衣服。
来自柯林斯例句
4. All I had to do was be halfway cool.
我要做的只是保持适度的冷静。
来自柯林斯例句
5. Columbia recently resigned the band for a cool $30 million.
