- unable or insufficient to produce effect; futile
- After several ineffectual and abortive leaps, we were forced to lift him over the obstacle.
- weak; lacking forcefulness
- Our group leader proved highly ineffectual, caving to every whim put forth by the other members.
- See also Thesaurus:futile
abortive, acarpous, aimless, arid, barren, bootless, borne, celibate, childless, counterproductive, desert, desolate, drained, dried-up, dry, effete, emasculate, empty, etiolated, exhausted, failed, failing, fallow, fatuitous, fatuous, featherweight, feckless, forceless, fruitless, futile, gaunt, gelded, ill-qualified, impotent, inadequate, inane, incapable, incompetent, ineffective, inefficacious, inefficient, infecund, infertile, inoperative, invalid, invertebrate, issueless, jejune, lame, leached, lightweight, limited, maladjusted, manque, mean, meaningless, menopausal, miscarried, miscarrying, narrow, no go, no-account, nonfertile, nonproducing, nonproductive, nonprolific, not equal to, not up to, nugacious, nugatory, of no account, of no effect, of no force, of no use, paltry, pointless, powerless, purposeless, set, sine prole, small, spineless, sterile, stickit, stillborn, successless, sucked dry, superfluous, teemless, unable, unadapted, unadjusted, unauthoritative, unavailable, unavailing, uncultivated, unequipped, unfertile, unfit, unfitted, unfortunate, unfruitful, unplowed, unproductive, unprolific, unqualified, unsown, unsuccessful, untilled, useless, vain, virgin, waste, wasted, weak, without any weight, without issue