惰だ弱じゃく

na-adjective, noun

apathetic; lackadaisical; indolent; listless; weak-willed

Describes a person's temperament or attitude as lacking energy, motivation, or willpower. Formal/literary register.

• 彼かれの惰だ弱じゃくな態たい度どには本ほん当とうに失しつ望ぼうした。

  I was truly disappointed by his apathetic attitude.

• 暑あつさのせいで、一いち日にち中じゅう惰だ弱じゃくに過すごしてしまった。

  Because of the heat, I spent the whole day listlessly.

na-adjective, noun

weak; feeble; effeminate; enervated

Refers to physical or constitutional weakness, often with a nuance of lacking vigor or being unmanly. Formal/literary; 'effeminate' is a dated usage.

• 病やみ上あがりで体からだが惰だ弱じゃくになっている。

  My body has become weak after recovering from illness.

• その貴き族ぞくは惰だ弱じゃくな若わか者ものとして描えがかれている。

  The nobleman is portrayed as an effete young man.