Stay up

verb

Definitions

Verb
  1. 1
    Used other than figuratively or idiomatically: see stay, up.

    "These trousers are too big around the waist. They won't stay up."

  2. 2
    not go to bed wordnet
  3. 3
    To remain awake; to not go to bed. intransitive

    "My plane leaves at 6:00 in the morning, so I plan to stay up until then and sleep on the plane."

  4. 4
    To maintain an erection. euphemistic, intransitive

    "He told his lover he has a problem staying up."

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