Customary
来自Big Physics
Safin（讨论 | 贡献）2022年4月27日 (三) 08:42的版本 （建立内容为“Category:etymology == google == [https://www.google.com.hk/search?q=customary+etymology&newwindow=1&hl=en ref] late Middle English (as a noun): from medieval…”的新页面）
late Middle English (as a noun): from medieval Latin custumarius, from custuma, from Anglo-Norman French custume (see custom).
etymonline
customary (adj.)
1520s, "liable to customs or dues;" c. 1600, "according to established usage, habitual," from Medieval Latin custumarius, from Latin consuetudinarius, from consuetitudinem (see custom (n.)). In Middle English it was a noun, "written collection of customs" of a manor or community. Earlier words for "according to established usage" were custumal (c. 1400, from Old French), custumable (c. 1300). Related: Customarily.
