Grounded
来自Big Physics
Old English grund, of Germanic origin; related to Dutch grond and German Grund .
etymonline
grounded (adj.)
late 14c., "learned, instructed thoroughly in the basics;" 1540s as "firmly fixed or established," past-participle adjective from ground (v.). Electrical sense is from 1889. Meaning "having been denied privileges" is from 1940s. Dickens had room-ridden "confined to one's room."
