(usually followed by `to') lacking necessary physical or mental ability; "dyslexics are unable to learn to read adequately"; "the sun was unable to melt enough snow"必須な肉体的または精神的な能力の欠如無力
例:dyslexics are unable to learn to read adequately 失読症の人は、十分に読むことを学ぶことができない
lacking in power or forcefulness; "an ineffectual ruler"; "like an unable phoenix in hot ashes"力または力強さが不足する無効
例:like an unable phoenix in hot ashes 熱い灰の中の虚弱な不死鳥のように
(usually followed by `to') not having the necessary means or skill or know-how; "unable to get to town without a car"; "unable to obtain funds"必要な手段または技術またはノウハウを持たないさまできない