sedentary

Concise Oxford English Dictionary © 2008 Oxford University Press:
sedentary /ˈsɛd(ə)nt(ə)ri/

▶adjective

• 1 tending to spend much time seated.

  ■ (of work or a way of life) characterized by much sitting and little physical exercise.

  ■ sitting.

• 2 Zoology & Anthropology inhabiting the same locality throughout life.

• 3 Zoology sessile.

– derivatives
sedentarily adverb,
sedentariness noun.

– origin C16 (in the sense ‘not migratory’): from Fr. sédentaire or L. sedentarius, from sedere ‘sit’.