不可避

1. Origins, structure, and basic meaning

• Structure: The written form is 不可避, read ふかひ. An element of impossibility combines with one of avoidance to describe something that cannot be avoided.
• Basic usage: 不可避となる states an unavoidable outcome, while 不可避なら treats that outcome as a condition for the next action.

2. Common pitfalls and similar expressions

• Formal assessment
  • This relatively formal expression suits an objective assessment of equipment, plans, or other circumstances. Example: 設備の老朽化で大規模な修理は不可避となった。 — Large-scale repairs became unavoidable as the equipment aged.
• Response after a condition
  • A conditional form can lead from the assessment to a response such as giving notice. Example: 計画の変更が不可避なら早めに知らせてほしい。 — If changing the plan is inevitable, please tell us early.