: a conditioning exercise performed from a supine position by raising the torso to a sitting position and returning to the original position without using the arms or lifting the feet
sat up; sitting up; sits up
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
Examples of sit-up in a Sentence
Recent Examples on the Web
Daryl Austin, USA Today, 31 Mar. 2025
In the segment, Kilmeade did crunches and Jones did sit-ups with a 25-pound weight.
—Melissa Rudy, FOXNews.com, 31 Mar. 2025
Jeremy D. Larson, Pitchfork, 21 Mar. 2025
Once in the version of the pose that works for you, sit up tall and breathe.
—Cory Martin, Verywell Health, 3 Feb. 2025
See All Example Sentences for sit-up
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Noun
The same can be said of long-standing resistance training exercises and bodyweight movements like pull-ups, squats, push-ups and sit-ups.
—Daryl Austin, USA Today, 31 Mar. 2025
In the segment, Kilmeade did crunches and Jones did sit-ups with a 25-pound weight.
—Melissa Rudy, FOXNews.com, 31 Mar. 2025
Verb
A couple hundred of us were all smashed together in this outdoor area, and, in between setups, Michael Stipe would sit up on top of a ladder with a bullhorn and just talk to everybody and answer questions and stuff.
—Jeremy D. Larson, Pitchfork, 21 Mar. 2025
Once in the version of the pose that works for you, sit up tall and breathe.
—Cory Martin, Verywell Health, 3 Feb. 2025
See All Example Sentences for sit-up
Cite this Entry
“Sit-up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sit-up. Accessed 10 Apr. 2025.
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