Sit I Sat Night English Meaning Bed Usual

Meaning: to not go to bed until later than usual

• sit up The first time my wife and I met, it was at a party, and we sat up most of the night talking.
  
  
• sit up I sat up half the night waiting for my daughter to come home.
  
  

Variety: Thisis typically used in British and Australian English but may be used in other varieties of English too.