opposeyoudaoicibaDictYouDict[oppose 词源字典]
oppose: [14] Oppose is in origin an Old French re-formation of Latin oppōnere, based on poser (source of English pose). Oppōnere was a compound verb formed from the prefix ob- ‘against’ and pōnere ‘put’ (source also of English position, posture, etc). It originally meant literally ‘set against’, but developed various figurative senses, including ‘oppose in argument’, which is how it was originally used when it arrived in English.

The notions of ‘contention’ and ‘prevention’ have remained uppermost in the English verb, as they have in opponent [16], which comes from the present participle of the Latin verb. But opposite [14] (from the Latin past participle) retains another metaphorical strand that began in Latin, of ‘comparison’ or ‘contrast’.
=> pose, position, posture[oppose etymology, oppose origin, 英语词源]
oppose (v.)youdaoicibaDictYouDict
late 14c., from Old French oposer "oppose, resist, rival; contradict, state opposing point of view" (12c.), from poser "to place, lay down" (see pose (v.1)), blended with Latin opponere "oppose, object to, set against" (see opponent). Related: Opposed; opposing.