frailest

词形变化：

副词: frailly | 形容词比较级: frailer | 形容词最高级: frailest | 名词: frailness |

同义词：

weak | delicate | fragile | feeble | dainty | slight | brittle | infirm | puny | in poor health | flimsy | insubstantial | spindly | imperfect | fallible |

反义词：

robust | solid | sturdy | strong | tough |