damaging

adj.	1.	causing harm or injury; as, damaging to career and reputation.
	2.	designed or tending to discredit, especially without positive or helpful suggestions.

Adj.	1.	damaging - (sometimes followed by `to') causing harm or injury; "damaging to career and reputation"; "the reporter's coverage resulted in prejudicial publicity for the defendant" Synonyms: detrimental, prejudicial, prejudicious
	2.	damaging - designed or tending to discredit, especially without positive or helpful suggestions; "negative criticism" Synonyms: negative

bad, baleful, baneful, corroding, corrosive, corrupting, corruptive, counterproductive, deadly, deleterious, detrimental, disadvantageous, disserviceable, distressing, eroding, erosive, evil, harmful, hurtful, injurious, lethal, malefic, malevolent, malign, malignant, mischievous, noisome, noxious, ominous, pernicious, poisonous, prejudicial, scatheful, toxic, venenate, veneniferous, venenous, venomous, vicious, virulent