profityoudaoicibaDictYouDict[profit 词源字典]
profit: [14] Like proficient, profit goes back to Latin prōficere ‘advance, be advantageous’. This was a compound verb formed from the prefix prō- ‘forward’ and facere ‘do, make’ (source of English fact, fashion, feat, etc). Its past participle prōfectus was used as a noun meaning ‘progress, success, profit’, and this passed into English via Old French profit. The Latin present participle prōficiēns ‘making progress’ is the source of English proficient [16], which took its meaning on via ‘making progress in learning’ to ‘adept’.
=> fact, fashion, feat, proficient[profit etymology, profit origin, 英语词源]
profit (v.)youdaoicibaDictYouDict
early 14c., "to advance, benefit, gain," from profit (n.) and from Old French prufiter, porfiter "to benefit," from prufit (see profit (n.)). Related: Profited; profiting.
profit (n.)youdaoicibaDictYouDict
mid-13c., "income;" c. 1300, "benefit, advantage;"from Old French prufit, porfit "profit, gain" (mid-12c.), from Latin profectus "profit, advance, increase, success, progress," noun use of past participle of proficere (see proficiency). As the opposite of loss, it replaced Old English gewinn. Profit margin attested from 1853.