一いっ途と

noun

the only way; the sole course

Used to express that there is no alternative; often appears in phrases like 一途をたどる (to follow the only path) or 一途しかない (there is no other way).

• 彼かれは成せい功こうへの一いっ途とを歩あゆみ続つづけた。

  He continued walking the only path to success.

• この状じょう況きょうでは、撤てっ退たいの一いっ途としかない。

  In this situation, there is no choice but to retreat.