tainting
taint-ing
adjective
Causing something to be spoiled, contaminated, or morally corrupted.
"A tainting rumour spread quickly."
noun
The act or process of spoiling or corrupting something's purity or quality.
"The tainting of the evidence was serious."
Thesaurus
Synonyms: contamination, taint, cloud, sully, defile, corrupt, infect
Antonyms: disinfect