Cheerful
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 06:07的版本 （建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/cheerful ref] From [https://en.wikipedia.org/wiki/Middle_English Middle English] chereful…”的新页面）
wiktionary
From Middle English chereful, cherful, equivalent to cheer + -ful.
etymonline
cheerful (adj.)
c. 1400, "full of cheer, having good spirits," from cheer (n.) + -ful. Meaning "elevating the spirits" is from mid-15c. Related: Cheerfully; cheerfulness.
