Tentative

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late 16th century: from medieval Latin tentativus, from tentare, variant of temptare ‘handle, try’.

wiktionary

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French tentatif, from Latin tentativus(“trying, testing”), from tento, past participle tentatus(“to try, test”); see tent, tempt.

etymonline

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tentative (adj.)

1580s, from Medieval Latin tentativus "trying, testing," from Latin tentatus, past participle of tentare "to feel, try." Related: Tentatively; tentativeness.