Challenging
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 11:13的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=challenging+etymology&newwindow=1&hl=en ref] Middle English (in the senses ‘accusation…”的新页面）
Middle English (in the senses ‘accusation’ and ‘accuse’): from Old French chalenge (noun), chalenger (verb), from Latin calumnia ‘calumny’, calumniari ‘calumniate’.
wiktionary
From Middle English chalengyng; equivalent to challenge + -ing.
