Operative

来自Big Physics

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late Middle English: from late Latin operativus, from Latin operat- ‘done by labour’, from the verb operari (see operate).


Ety img operative.png

wiktionary

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From Middle French operatif (modern French opératif).


etymonline

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operative (adj.)

late 15c., operatif, "active, working," from Old French operatif (14c.) and directly from Medieval Latin operativus "creative, formative," from operat-, past-participle stem of operari (see operation). Meaning "producing the intended effect" is from 1590s.




operative (n.)

1809, "worker, operator, artisan," from operative (adj.); sense of "secret agent, spy" is attested from 1930, probably from its use by the Pinkerton Detective Agency as a title for their private detectives (1905) to avoid the term detective.