The Collaborative International Dictionary of English v.0.48:

homebody \home"bod`y\ n.
   a person who seldom goes anywhere; one not given to wandering
   or travel.

   Syn: stay-at-home.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

homebody
    n 1: a person who seldom goes anywhere; one not given to
         wandering or travel [syn: stay-at-home, homebody]

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "homebody":
   Diogenes, Hieronymian, Hieronymite, Timon of Athens, anchoress,
   anchorite, ascetic, bedridden invalid, cloistered monk,
   closet cynic, desert fathers, desert saints, eremite, hermit,
   hermitess, invalid, isolationist, loner, marabout, outcast, pariah,
   pillar saint, pillarist, recluse, seclusionist, shut-in, solitaire,
   solitary, solitudinarian, stay-at-home, stylite