Engaged
来自Big Physics
late Middle English (formerly also as ingage ): from French engager, ultimately from the base of gage1. The word originally meant ‘to pawn or pledge something’, later ‘pledge oneself (to do something’), hence ‘enter into a contract’ (mid 16th century), ‘involve oneself in an activity’, ‘enter into combat’ (mid 17th century), giving rise to the notion ‘involve someone or something else’.
etymonline
engaged (adj.)
"affianced, betrothed," 1610s, past-participle adjective from engage. Of telephone lines from 1891.
