approachyoudaoicibaDictYouDict[approach 词源字典]
approach: [14] Approach is etymologically connected with propinquity ‘nearness’; they both go back ultimately to Latin prope ‘near’. Propinquity [14] comes from a derived Latin adjective propinquus ‘neighbouring’, while approach is based on the comparative form propius ‘nearer’. From this was formed the late Latin verb appropiāre ‘go nearer to’, which came to English via Old French aprochier.

Latin prope, incidentally, may be connected in some way with the preposition prō (a relative of English for), and a hypothetical variant of it, *proqe, may be the source, via its superlative proximus, of English proximity and approximate.

=> approximate, propinquity, proximity[approach etymology, approach origin, 英语词源]
approach (v.)youdaoicibaDictYouDict
c. 1300, from Anglo-French approcher, Old French aprochier "approach, come closer" (12c., Modern French approcher), from Late Latin appropiare "go nearer to," from Latin ad- "to" (see ad-) + Late Latin propiare "come nearer," comparative of Latin prope "near" (see propinquity). Replaced Old English neahlæcan.
approach (n.)youdaoicibaDictYouDict
mid-15c., from approach (v.). Figurative sense of "means of handling a problem, etc." is first attested 1905.