Meaning

• Verb

  1. (often followed by up) To stop sleeping.
  2. (often followed by up) To make somebody stop sleeping; to rouse from sleep.
  3. To put in motion or action; to arouse; to excite.
  4. To be excited or roused up; to be stirred up from a dormant, torpid, or inactive state; to be active.
  5. To watch, or sit up with, at night, as a dead body.
  6. To be or remain awake; not to sleep.
  7. (obsolete) To be alert; to keep watch
  8. (obsolete) To sit up late for festive purposes; to hold a night revel.

• Noun
• Noun