slur

slur verb [ I,T ] uk/slɜːr/ uspresent participle slur ring | past tense and past participle slur red
to speak without separating your words clearly, often because you are tired or drunk

говорить заплетающимся языком
He'd drunk too much and was slur ring his words.

SLUR noun

[ C ] uk/slɜːr/ us
a criticism that will make people have a bad opinion of someone or something

что-либо бросающее тень на кого-либо/что-либо
a racial slur She regarded it as a slur on her character.