Pronunciation: (den'i-grāt"), [key]
—v.t., -grat•ed, -grat•ing.
1. to speak damagingly of; criticize in a derogatory manner; sully; defame: to denigrate someone's character.
2. to treat or represent as lacking in value or importance; belittle; disparage: to denigrate someone's contributions to a project.
3. to make black; blacken: rain clouds denigrating the sky.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.