勤つとまらない

i-adjective

unfit for; unequal to; cannot handle

Used to say someone is not capable of doing a job, role, or task. Often appears in the negative potential form 勤まらない, implying the person lacks the ability or suitability.

• 彼かれにはこの仕し事ごとは勤つとまらないだろう。

  He probably can't handle this job.

• 責せき任にんが重おもすぎて、私わたしにはとても勤つとまらない。

  The responsibility is too heavy; I'm just not up to it.