能あたう限かぎり

expression, noun which may take the genitive case particle 'no', adverb

as much as possible; to the best of one's ability

A somewhat formal or literary expression meaning 'to the fullest extent one can'. Often used in set phrases like 能う限りの努力 or 能う限り早く. The modern equivalent is できる限り.

See also: できる限り

• 能あたう限かぎりの援えん助じょを惜おしまない。

  I will spare no effort in giving as much assistance as I can.

• 能あたう限かぎり早はやくお返へん事じいたします。

  I will reply as soon as I possibly can.