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Lacking physical strength or vigor; weak.
(adjective)
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Lacking in power, as to act effectively; helpless: "Technology without morality is barbarous; morality without technology is impotent” ( Freeman J. Dyson).
(adjective)
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Incapable of sexual intercourse, often because of an inability to achieve or sustain an erection.
(adjective)
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Sterile. Used of males.
(adjective)
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Obsolete Lacking self-restraint.
(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.