Lacking physical strength, especially as a result of age or illness. The feeble old man struggled to lift the heavy box.
Lacking strength of character or determination. Her feeble attempt to stand up to the bully was quickly dismissed.
Lacking intensity or brightness; faint. The feeble light from the candle barely illuminated the room.
Inadequate, weak, or unconvincing; ineffective. His apology was a feeble attempt to cover up the mistake.