(a.) Unavailing; unprofitable; useless; without advantage or success.

abortive barren counterproductive effete empty etiolated failed failing fatuitous fatuous feckless fruitless frustrating futile gainless inadequate inane ineffective ineffectual inefficacious inoperative invalid lame manque miscarried miscarrying nonremunerative nugacious nugatory of no effect of no force otiose pointless profitless purposeless rewardless sterile stickit stillborn successless unavailable unavailing unfortunate unproductive unprofitable unremunerative unrewarding unsuccessful useless vain wasteful worthless