slur

(noun) (music) a curved line spanning notes that are to be played legato.

(noun) a disparaging remark. Synonyms: aspersion. Examples: "In the 19th century any reference to female sexuality was considered a vile aspersion." "It is difficult for a woman to understand a man's sensitivity to any slur on his virility."

(noun) a blemish made by dirt. Synonyms: smudge, spot, blot, daub, smear, smirch. Example: "He had a smudge on his cheek."

(verb) play smoothly or legato. Example: "The pianist slurred the most beautiful passage in the sonata."

(verb) speak disparagingly of; e.g., make a racial slur. Example: "Your comments are slurring your co-workers."

(verb) utter indistinctly.

(verb) become vague or indistinct. Synonyms: blur, dim. Example: "The distinction between the two theories blurred."