in-festīvus

a, um, adj.
I. not agreeable, not pleasant, inelegant (post-class.): subagresti ingenio et infestivo, Gell. 1, 5, 3.— Adv.: infestīvĭter, inelegantly: cetera vertit non infestiviter, Gell. 9, 9, 9.
Lewis & Short
A Latin Dictionary, 1879
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