sit up


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sit up

 
1. to rise from a lying to a sitting position. When the alarm went off, he sat up and put his feet on the floor. She couldn't sleep, so she sat up and read a book.
2. to sit more straight in one's seat; to hold one's posture more upright while seated. Please sit up. Don't slouch! You wouldn't get backaches if you would sit up.
See also: sit, up

sit up

to stay awake past the time that you usually go to sleep We sat up talking half the night. Many nights I sat up until dawn, trying to get my term papers finished on time.
See also: sit, up

sit up

1. Rise to a sitting position from lying down, as in The sick child sat up and asked for a drink of water. [Early 1200s]
2. Stay up later than usual, as in The nurse sat up with her all night long. [Mid-1500s]
3. Sit with the spine erect, as in She was always telling the students to sit up. [Early 1700s]
4. Become suddenly alert, as in The students sat up when he brought up the test. The same sense appears in the related sit up and take notice, as in When he mentioned the arrival of a movie star, they all sat up and took notice. [Late 1800s]
See also: sit, up

sit up

v.
1. To rise from lying down to a sitting position: The patient sat up for her meal.
2. To sit with the spine erect: The nanny told the children to sit up.
3. To stay up later than the customary bedtime: My parents sat up waiting for me to come home.
4. To become suddenly alert: The students sat up when the teacher mentioned the test.
See also: sit, up
References in periodicals archive ?
A few sit ups wouldn't hurt some of Dubai's commuters, we think.
With our re-tests (a shuttle run and a test to see how many press ups and sit ups we can do in a two minute period) looming, we have everything to gain and nothing to lose.
Full Sit Ups--There has been a lot of criticism hoisted at the lowly sit-up, but recent research supports the claim that full sit ups can place high amounts of compressive farce on the inter-vertebral discs.
Many short bursts of activity can be an effective alternative to prolonged periods of exercise, so while enjoying your favourite TV show, why not perform 10 press ups and sit ups during each ad break?
An inexpensive dumbbell set and enough room to do push ups and sit ups are all you need for a good strength-building routine.
The Aquatrend Water Workout Station(tm) combines stretching, bending, sit ups, crunches, running, jumping, aerobics and all upper and lower bodily movements without pain or strain.