dañar
v.
damage, harm; impair; jeopardize
danar
v.
harm, hurt
dañar
= damage, impair, cause + erosion, injure, do + harm.
Ex: Single holds are useful, for example, when a particular copy of a document is damaged or needs rebinding.
Ex: It is difficult to neglect either entirely, without impairing the effectiveness in fulfilling the other objective.
Ex: The replacement of the book catalog by the card catalog has caused a grave erosion of the ideal catalog sought by Panizzi and Cutter.
Ex: Dialog is being injured and will continue to be injured if the American Chemical Society continues to assert falsely that Dialog is underpaying royalties.
Ex: Miss Laski suggests that the depiction of life found in many novels is naive, over-simplified and, as a constant diet, can do more harm than good.
----
* dañar la credibilidad (de Alguien) = damage + credibility.
* dañar la credibilidad (de Alguien/Algo) = impair + credibility.
* que no daña el medio ambiente = environmentally sound, environmentally friendly.