Someone who plays the stand-up bass (double bass).

plural of stand-up bass

plural of stand-up guy

(idiomatic) To publicly make known one's views, contributions, or vote, especially in a contentious situation where fortitude is required.

(idomatic) A single sexual encounter between two individuals, lasting for less than an entire night, where at least one of the partners has no immediate intention or expectation of establishing a longer-term sexual or romantic relationship.

plural of half-night stand

(colloquial) To remain uselessly in a place or situation, without taking any action.

(idiomatic, informal) To leave a place, often with anger or anticipation of going somewhere more exciting.

present participle of stand up against

(informal, figuratively) Very easily.