THESAURUS
unrewarding
abortive, barren, bootless, deleterious, detrimental, disadvantageous, disserviceable, fruitless, gainless, harmful, injurious, nonremunerative, otiose, prejudicial, profitless, rewardless, sterile, unadvantageous, unfavorable, unproductive, unprofitable, unremunerative, useless, worthless
