1. A stomach exercise in which a person sits up from a supine position without using the arms for leverage

1. Not go to bed
   "We sat up all night to watch the election"
   - stay up 
2. Change to an upright sitting position
   "He sat up in bed"

Derived forms: sit-ups, sitting up, sits up, sat up

Type of: change posture, stomach exercise, tummy crunch, wake

Encyclopedia: Sit up

• endaemonism
• endameba
• Endamoeba
• Endamoeba histolytica
• Endamoebidae
• endanger
• endangered
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• endangerment
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• endarteritis
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• endearing
• endearingly
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• endeavor
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• Endecott
• ended
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• endemic typhus
• endemical
• slimeball
• slimed