Harmful, injurious, describing something that causes damage.(adjective)
Present participle of damage.(verb)
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Use "damaging" in a sentence
"I think you forgot to include fair warning that anime can be complete * crack* and brain damaging from the POV that they don't bother to make any sense or explain themselves!"
"Lane began by negotiating a truce in a price war in the Far East between Royal Dutch and Shell and by putting an end to what he called the damaging “battledore and shuttlecock game of accusation” between Samuel and Deterding."
"Bizos said the deleted parts contained what he described as damaging admissions by Gaye about discussions between her and her husband shortly after Hani's murder."