Webster's Revised Unabridged Dictionary · 1913

Weakness

Weakness , noun

1.
The quality or state of being weak; want of strength or firmness; lack of vigor; want of resolution or of moral strength; feebleness.
2.
That which is a mark of lack of strength or resolution; a fault; a defect.
Many take pleasure in spreading abroad the weakness of an exalted character. — Spectator