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impotency

noun

• powerlessness
• impotence
• infertility
• quality
• sterility

antonyms

• potence
• potency
• power
• powerfulness

sounds kind of like

• impatience
• impedance
• impeding
• impotence
• impudence
• in evidence
• inaptness
• ineptness
• inhabitancy
• invading
• inviting