使つかわざるを得えず

expression

forced to use; have no choice but to use

Fixed expression meaning 'cannot help but use' or 'compelled to use'. Often used when circumstances leave no alternative.

• この状じょう況きょうでは、最さい新しんの技ぎ術じゅつを使つかわざるを得えず、古ふるい方ほう法ほうでは対たい応おうできない。

  In this situation, we are forced to use the latest technology; the old methods can't handle it.

• 予よ算さんが足たりないので、安やすい材ざい料りょうを使つかわざるを得えず、品ひん質しつが心しん配ぱいだ。

  Since the budget is insufficient, we have no choice but to use cheap materials, and I'm worried about the quality.