Synonyms and related words :
barren, bootless, failed, failing, fruitless, futile, gainless, immature, ineffective, ineffectual, inefficacious, lame, manque, miscarried, miscarrying, nonremunerative, of no effect, otiose, profitless, rewardless, sterile, stickit, stillborn, successless, unavailable, unavailing, unformed, unfortunate, unmatured, unproductive, unprofitable, unremunerative, unrewarding, unripe, unsuccessful, useless, vain