ざるを得えない

expression, i-adjective

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

Attaches to the -nai stem of a verb (e.g., 行かざるを得ない). Expresses that the action is unavoidable, often due to external circumstances or inner compulsion. More formal and emphatic than ～なければならない.

• 悪あく天てん候こうのため、試し合あいは中ちゅう止しせざるを得えなかった。

  Due to the bad weather, we had no choice but to cancel the game.

• 彼かれの説せつ明めいを聞きいて、納なっ得とくせざるを得えなかった。

  After hearing his explanation, I couldn't help but be convinced.