adj. tes·ti·er, tes·ti·est Irritated, impatient, or exasperated; peevish: a testy cab driver; a testy refusal to help. [Alteration of Middle English testif, headstrong, alteration (influenced by Middle English -if, variant of -ive, -ive, as in natif, native) of Old French testu, from Old French teste, head, from Late Latin testa, skull; see TESTON.] testi·ly adv. testi·ness n. |
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