sit

  • 131sit up — intransitive verb Date: 13th century 1. a. to rise from a lying to a sitting position b. to sit with the back erect 2. to show interest, alertness, or surprise < sit up and take notice > 3. to stay up after the usual time for going to bed < sat&#8230; …

    New Collegiate Dictionary

  • 132sit on it — verb a) To wait or hesitate. The boss said to sit on it and I tend to agree, it is too soon to begin. b) up yours or back off. Joanie said, Sit on it, Richie! …

    Wiktionary