unproductive

from WordNet (r) 3.0 (2006)

unproductive
    adj 1: not producing or capable of producing; "elimination of
           high-cost or unproductive industries" [ant: {productive}]
    2: not producing desired results; "the talks between labor and
       management were unproductive"

from The Collaborative International Dictionary of English v.0.48

Unproductive \Unproductive\
   See {productive}.

from Moby Thesaurus II by Grady Ward, 1.0

57 Moby Thesaurus words for "unproductive":
      abortive, acarpous, arid, barren, bootless, celibate, childless,
      desert, desolate, drained, dried-up, dry, exhausted, fallow,
      fruitless, gainless, gaunt, gelded, impotent, ineffective,
      ineffectual, infecund, infertile, issueless, jejune, leached,
      menopausal, nonfertile, nonproducing, nonproductive, nonprolific,
      nonremunerative, otiose, profitless, rewardless, sine prole,
      sterile, sucked dry, teemless, unavailable, unavailing,
      uncultivated, unfertile, unfruitful, unplowed, unprofitable,
      unprolific, unremunerative, unrewarding, unsown, untilled, useless,
      vain, virgin, waste, wasted, without issue