- grounded (adj.)
[grounded 词源字典]
- 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."[grounded etymology, grounded origin, 英语词源]