- insouciance (n.)
[insouciance 词源字典]
- 1799, from French insouciant "carelessness, thoughtlessness, heedlessness," from in- "not" (see in- (1)) + se soucier "to care," from Latin sollicitare "to agitate" (see solicit).[insouciance etymology, insouciance origin, 英语词源]
- thoughtless (adj.)
- 1610s, "heedless, imprudent," from thought + -less. Meaning "inconsiderate of others" is from 1794. Related: Thoughtlessly; thoughtlessness.