"taint" in the noun sense
1. contamination, taint
the state of being contaminated
"taint" in the verb sense
1. defile, sully, corrupt, taint, cloud
place under suspicion or cast doubt upon
"sully someone's reputation"
2. infect, taint
contaminate with a disease or microorganism
Source: WordNet® (An amazing lexical database of English)
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