subordination (n.)youdaoicibaDictYouDict[subordination 词源字典]
mid-15c., subordinacioun "hierarchical arrangement," from Medieval Latin subordinationem (nominative subordinatio), noun of action from past participle stem of subordinare (see subordinate (adj.)). Meaning "condition of being duly submissive" is from 1736.[subordination etymology, subordination origin, 英语词源]