insense (v.)youdaoicibaDictYouDict[insense 词源字典]
"cause (someone) to understand," c. 1400, ensense, from Old French ensenser "to enlighten, to bring to sense," from en- "in" (see in- (2)) + sens (see sense (n.)). Restricted to Northern English dialect from 17c.[insense etymology, insense origin, 英语词源]