1. the quality or state of being physically weak or delicate
2. the quality of being morally or mentally weak; lack of moral strength

Examples

• The frailness of the elderly patient required careful handling during treatment.
• Despite her frailness, she maintained a sharp mind and quick wit.
• The frailness of human memory means we often forget important details.
• He acknowledged the frailness of his willpower when faced with temptation.
• The frailness of the ancient manuscript made it necessary to preserve it in a climate-controlled environment.
• Her physical frailness did not diminish her determination to complete the marathon.