Hesitant

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late Middle English: from Latin haesitant- ‘being undecided’, from the verb haesitare (see hesitate).

Borrowed from Latin haesitans, present participle of haesitare(“to stick fast, to hesitate”)

hesitant (adj.)

1640s, probably a back-formation from hesitancy, or else from Latin haesitantem. Related: Hesitantly.