frailty

详细解释:n. 弱点, 脆弱, 意志薄弱
【法】 虚弱, 意志薄弱, 因意志薄弱而犯的错误

词型变化：

名词复数:frailties

英语解释：

名词 frailty:

the state of being weak in health or body (especially from old age)同义词：infirmity, debility, feebleness, frailness, valetudinarianism