- learned (adj.)
[learned 词源字典]
- "having knowledge gained by study," mid-14c., past participle adjective from learn (v.) in former transitive sense. Related: Learnedly; learnedness.[learned etymology, learned origin, 英语词源]
- unearned (adj.)
- c. 1200, from un- (1) "not" + past participle of earn (v.). Unearned income is recorded from 1889.
- unlearned (adj.)
- c. 1400, "ignorant," from un- (1) "not" + learned (adj.). From 1530s as "not acquired by learning," from past participle of learn (v.). Old English had unlæred.
- well-earned (adj.)
- 1730, from well (adv.) + past participle of earn (v.).