verb (used with object), as·per·at·ed, as·per·at·ing.
to make rough, harsh, or uneven: a voice asperated by violent emotion.
Origin of asperate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(of plant parts) having a rough surface due to a covering of short stiff hairs
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
1650s, "make rough," from Latin asperatus, past participle of asperare "to roughen, make rough, exasperate," from asper "rough" (see asperity). Related: Asperated; asperating.
Online Etymology Dictionary, © 2010 Douglas Harper