All potent antonyms

adj potent

• insignificant — unimportant, trifling, or petty: Omit the insignificant details.
• unimportant — of much or great significance or consequence: an important event in world history.
• ineffective — not effective; not producing results; ineffectual: ineffective efforts; ineffective remedies.
• ineffectual — not effectual; without satisfactory or decisive effect: an ineffectual remedy.
• inactive — not active: an inactive volcano.
• infirm — feeble or weak in body or health, especially because of age; ailing.
• disabled — physically or mentally impaired, injured, or incapacitated.
• fragile — brittle
• helpless — unable to help oneself; weak or dependent: a helpless invalid.
• impotent — not potent; lacking power or ability.
• incapable — not capable.
• weak — not strong; liable to yield, break, or collapse under pressure or strain; fragile; frail: a weak fortress; a weak spot in armor.
• soft — yielding readily to touch or pressure; easily penetrated, divided, or changed in shape; not hard or stiff: a soft pillow.
• unhealthy — not in a state of good or normal health; in an unsound, weak, or morbid condition.