しかない

しかない expresses that there is no other option besides what is stated. It conveys a sense of inevitability or resignation, emphasizing that the speaker must do or accept what follows. It is stronger and more decisive than other phrases like ～しか～ない. Use it in situations where alternatives do not exist or are unacceptable, such as having to take a specific action, relying on a single resource, or when circumstances force a particular outcome. Typical contexts include problems with no solution except one action, or circumstances that force a choice. It often denies alternatives by focusing on the only possible thing. Example nuances: The tone can be firm, urgent, or even slightly pessimistic depending on context.