ineffectual
I
adjective
abortive, barren, effete, emasculated, feckless, feeble, figurehead, fruitless, futile, gainless, good for nothing, idle, impotent, inadequate, incompetent, indecisive, ineffective, inefficacious, inept, inoperative, insufficient, inutile, inutilis, invalid, invalidus, lame, neutralized, nugatory, null, powerless, profitless, sterile, unauthoritative, unavailing, unempowered, unfruitful, uninfluential, unoperative, unproductive, unprofitable, unserviceable, unsuccessful, useless, vain, void, weak, withered, without effect, without weight, worthless
II
index
disabled (deprived of legal right), expendable, futile, inadept, inadequate, incapable, incompetent, ineffective, inept (incompetent), invalid, minor, nugatory, null (invalid), null and void, otiose, powerless, unavailing, unproductive, void (invalid)
Burton's Legal Thesaurus.
William C. Burton.
2006