- unbalanced (adj.)
[unbalanced 词源字典]
- 1640s, from un- (1) "not" + past participle of balance (v.). Earliest use is in reference to the mind, judgment, etc. Of material things, it is recorded from 1732.[unbalanced etymology, unbalanced origin, 英语词源]
- well-balanced (adj.)
- 1620s, from well (adv.) + past participle of balance (v.).