usage: powerlessness revealed by an inability to act; "in spite of their weakness the group remains active"
3. weakness, property
usage: the property of lacking physical or mental strength; liability to failure under pressure or stress or strain; "his weakness increased as he became older"; "the weakness of the span was overlooked until it collapsed"
4. weakness, misfortune, bad luck, tough luck, ill luck
usage: the condition of being financially weak; "the weakness of the dollar against the yen"