Corrupted or filled with imperfections.(adjective)
Simple past tense and past participle of taint.(verb)
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Use "tainted" in a sentence
"As part of Erdogan's media blitz, he was interviewed on Egypt's most popular political talk show, "10 o'clock," where he defended the concept of secularism - a term tainted as "anti-Islamic" in the eyes of many Egyptians."
"Nevertheless, many are calling Reyes gutless and his title tainted."
"Satra's recommendation, which it described as tainted and flawed."