congéyoudaoicibaDictYouDict[congé 词源字典]
"An unceremonious dismissal or rejection of someone", Late Middle English (in the general sense 'permission to do something'): from Old French congie, from Latin commeatus 'leave of absence', from commeare 'go and come'. The word is now usually treated as equivalent to modern French.[congé etymology, congé origin, 英语词源]