1. Out of bed
   "are they astir yet?"
   - up 
2. On the move
   "the whole town was astir over the incident"
   - about

See also: active, awake

• ofttimes
• Ogalala
• ogam
• Ogcocephalidae
• Ogden
• Ogden Nash
• ogdoad
• ogee
• ogee arch
• ogham
• ogive
• Oglala
• ogle
• ogler
• ogre
• ogreish
• ogress
• ogrish
• oh
• oh boy
• oh dear
• Ohio
• Ohio buckeye
• Ohio goldenrod
• Ohio River