impotent
Definitions
Lacking power, authority, or vigor; helpless or ineffective.
Unable to take effective action; powerless.
Unable to achieve a penile erection or reach orgasm.
Examples
The government felt impotent to stop the rapid spread of the economic crisis.
He was frustrated by his own impotent rage as he watched the thief escape.
Without the necessary resources, the committee remained largely impotent in its efforts to enact change.
Synonyms
powerless helpless ineffectual weak incapable ineffective feeble
Antonyms
powerful potent strong effective capable influential vigorous