Expectancy
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 11:50的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=expectancy+etymology&newwindow=1&hl=en ref] early 17th century: from Latin exspectantia,…”的新页面）
early 17th century: from Latin exspectantia, from exspectare ‘look out for’ (see expect).
wiktionary
expectant + -cy or expect + -ancy
etymonline
expectancy (n.)
"act or state of expecting; anticipatory belief or desire," 1590s, from Medieval Latin expectantia, from Latin expectans/exspectans (present participle of expectare/exspectare "await, desire, hope;" see expect) + -ancy. Related: Expectance.
