ざるを得えぬ

expression

have to; have no choice but to; cannot help doing

A formal, somewhat literary expression equivalent to ざるを得ない. Attaches to the -nai stem of a verb to express unavoidable obligation or compulsion. Often used in written or formal speech.

See also: ざるを得ない

• 彼かれの提てい案あんには反はん対たいせざるを得えぬ。

  I have no choice but to oppose his proposal.

• この事じ実じつを認みとめざるを得えぬ。

  I cannot help but acknowledge this fact.