いかんでは

いかんでは is used to express that the result or outcome changes depending on a certain condition or factor.

It emphasizes that the condition mentioned is decisive, meaning that different outcomes are possible based on how that condition turns out. Because of this nuance, it is often used in formal or written Japanese, such as explanations, policies, reports, and official statements.

The speaker usually does not decide the outcome yet, but indicates that it will be determined based on the condition.

Usage Notes

• ✔ Expresses conditional dependency

• ✔ Often used with results, decisions, or evaluations

• ✔ Common in formal / written contexts

• ❌ Rare in casual conversation

• ❌ Not used for fixed or already-decided outcomes