impotent

1 not able to produce fruit or offspring most mules are impotent Synonyms barren, fruitless, sterile, infertile, unfruitfulRelated Words altered, desexed, neutered, sterilized; castrated, emasculated, gelded; spayed; unproductiveNear Antonyms fecund, luxuriant, productive, prolific; enriched, fertilized, rich; impregnated, pregnant; potent; bearing, producing, yielding; blooming, bursting, flourishing, swarming, teemingAntonyms fat, fertile, fruitful

2 unable to act or achieve one's purpose an impotent ruler who was just a figurehead Synonyms hamstrung, handcuffed, helpless, high and dry, hog-tied, powerless, impuissant, paralyzed, weakRelated Words incapable, incompetent, ineffective, ineffectual, inept, unfit, useless; feeble, frail, infirm, passive, spineless, supine, unaggressiveNear Antonyms able, capable, competent, effective, efficient; authoritarian, autocratic (also autocratical), despotic, dictatorial, magisterial, tyrannical (also tyrannic); dominant, dynamic, energetic, forceful, robust, sturdy, tough, vigorous; important, major, significant; high-level, senior, topAntonyms mighty, potent, powerful, puissant, strong