Deprave \De*prave"\, n. t. [imp. & p. p. Depraved; p. pr. & vb. n. Depraving.]

[L. depravare, depravatum; de- + pravus crooked, distorted, perverse, wicked.]

1. To speak ill of; to depreciate; to malign; to revile. [Obs.]

And thou knowest, conscience, I came not to chide Nor deprave thy person with a proud heart. --Piers Plowman.

2. To make bad or worse; to vitiate; to corrupt.

Whose pride depraves each other better part. --Spenser.

Syn: To corrupt; vitiate; contaminate; pollute.

Source: Webster's Revised Unabridged Dictionary (1913)