tutelage (n.)youdaoicibaDictYouDict[tutelage 词源字典]
"guardianship," c. 1600, from -age + Latin tutela "a watching, keeping, safeguard, protection," from variant past participle stem of tueri "watch over" (see tutor (n.)). Meaning "instruction" first appeared 1857.[tutelage etymology, tutelage origin, 英语词源]