slur

1. An insult or slight, especially one that is muttered incoherently under one's breath.
2. An extremely offensive and socially unacceptable term targeted at a group of people (such as an ethnicity, sexual orientation, etc.).
3. A mark of dishonour; a blight or stain. · a slur on one's reputation
4. An act of running one's words together; poor verbal articulation.
5. Any instance of separate things gradually blending together, such as heartbeats in some medical disorders.
6. A set of notes that are played legato, without separate articulation.
7. The symbol indicating a legato passage, written as an arc over the slurred notes (not to be confused with a tie).

Plural slurs