adj. 25B6; adjective FRUITLESS, vain, pointless, useless, ineffectual, ineffective, inefficacious, to no effect, of no use, in vain, to no avail, unavailing; unsuccessful, failed, thwarted; unproductive, barren, unprofitable, abortive; impotent, hollow, empty, forlorn, idle, hopeless; archaic bootless.
useful.