in-dulco

āvi, ātum, 1, v. a.
I. to make sweet, to sweeten (late Lat.).
I. Lit.: aquam amaram, Tert. adv. Jud. 13; Vulg. Sirach, 38, 5.—
II. Trop., to speak sweetly, Vulg. Sirach, 12, 15.
Lewis & Short
A Latin Dictionary, 1879
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