See impotent in Webster's New World Roget's A-Z Thesaurus II
adjective
Lacking power or strength:
helpless, powerless. See ability, helpNot capable of accomplishing anything:
helpless, inadequate, incapable, ineffectual, powerless, weak. See ability, strongUnable to produce offspring:
barren, childless, infertile, sterile, unfruitful. See rich
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