To take away; to withdraw.
To take credit or reputation from; to defame.
To take away a part or something, especially from one's credit; to lessen reputation; to derogate; to defame; -- often with from.
take away a part from; diminish; "His bad manners detract from his good character"
take something away from the value or reputation of, as in: Words that are not properly used can detract from a writer's credibility.