menoscabar

Etymology
From.

Verb

 * 1)  to turn  incomplete or imperfect
 * 2)  to discredit, to disbelieve
 * 3)  to despise, to scorn, to look down on

Etymology
From.

Verb

 * 1) to lessen
 * 2) to sully; to mutilate
 * 3) to undermine
 * 1) to undermine