childless

from WordNet (r) 3.0 (2006)

childless
    adj 1: without offspring; "in some societies a childless woman
           is rejected by her tribesmen"

from The Collaborative International Dictionary of English v.0.48

Childless \Child"less\, a.
   Destitute of chidren or offspring.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

42 Moby Thesaurus words for "childless":
      acarpous, arid, barren, celibate, desert, desolate, drained,
      dried-up, dry, exhausted, fallow, fruitless, gaunt, gelded,
      impotent, ineffectual, infecund, infertile, issueless, jejune,
      leached, menopausal, nonfertile, nonproducing, nonproductive,
      nonprolific, sine prole, sterile, sucked dry, teemless,
      uncultivated, unfertile, unfruitful, unplowed, unproductive,
      unprolific, unsown, untilled, virgin, waste, wasted,
      without issue