professyoudaoicibaDictYouDict[profess 词源字典]
profess: [14] Profess comes from prōfessus, the past participle of Latin prōfitērī ‘declare publicly’. This was a compound verb formed from the prefix prō- ‘forth, in public’ and fatērī ‘acknowledge, confess’ (a relative of English fable, fame, and fate and source also of confess). A professor [14] is etymologically someone who ‘makes a public claim’ to knowledge in a particular field; and someone’s profession [13] is the area of activity in which they ‘profess’ a skill or competence.
=> confess, fable, fame, fate[profess etymology, profess origin, 英语词源]
profess (v.)youdaoicibaDictYouDict
early 14c., "to take a vow" (in a religious order), a back-formation from profession or else from Old French profes, from Medieval Latin professus "avowed," literally "having declared publicly," past participle of Latin profiteri "declare openly, testify voluntarily, acknowledge, make public statement of," from pro- "forth" (see pro-) + fateri (past participle fassus) "acknowledge, confess," akin to fari "to speak," from PIE root *bha- (2) "to speak, tell, say" (see fame (n.)). Meaning "declare openly" first recorded 1520s, "a direct borrowing of the sense from Latin" [Barnhart]. Related: Professed; professing.