shrug (n.)youdaoicibaDictYouDict[shrug 词源字典]
a shoulder motion meant to express indifference, want of an answer, etc., 1590s, from shrug (v.).[shrug etymology, shrug origin, 英语词源]
shrug (v.)youdaoicibaDictYouDict
c. 1400, schurgyng, of uncertain origin. Perhaps connected to Danish skrugge "to stoop, crouch." Related: Shrugged; shrugging. To shrug (something) off "dismiss" is recorded from 1909.