よりほかない

よりほかない expresses a strong sense of necessity or inevitability: there is no other option or course of action available. It often appears in formal or written Japanese, close to the level of necessity rather than mere suggestion. It can replace またはしかない in many contexts, emphasizing that the speaker must act as described. The nuance is somewhat heavier or stoic compared to しかない, because it highlights that all other options have been exhausted. Typical contexts include urgent decisions, unavoidable situations, or conclusions drawn from circumstances.