Learned
来自Big Physics
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Middle English: from learn, in the sense ‘teach’.
wiktionary
From Middle English lerned, lernd, lernyd, equivalent to learn + -ed, which replaced the earlier lered(“taught”), from Old English (ġe)lǣred, past participle of lǣran(“to teach”). [1]Learn formerly had the meaning “to teach”, which is now found only in nonstandard speech, as well as its standard meaning of “to learn”.
From Old English leornian(“to acquire knowledge”)
etymonline
learned (adj.)
"having knowledge gained by study," mid-14c., past-participle adjective from learn (v.) in its former transitive sense. Related: Learnedly; learnedness. "[L]earned expresses depth and fullness in the knowledge, while scholarly expresses accuracy" [Century Dictionary].
