sedentary

Short definition from Wiktionary

Adjective

1. 1
   Not moving; relatively still; staying in the vicinity.
2. 2
   Living in a fixed geographical location; the opposite of nomadic.
3. 3
   Not moving much; sitting around.
4. 4
   inactive; motionless; sluggish; tranquil
5. 5
   Caused by long sitting.

Noun

1. 1
   a sedentary person