Possibly
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 00:42的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=possibly+etymology&newwindow=1&hl=en ref] late Middle English: from Old French, or from L…”的新页面）
late Middle English: from Old French, or from Latin possibilis, from posse ‘be able’.
wiktionary
possible + -ly
etymonline
possibly (adv.)
c. 1400, possibli, "by any existing power or means, in a possible manner," from possible (adj.) + -ly (2). By c. 1600 as "perhaps. perchance."
