GRAMMAR DETAIL
〜いかんだ
Formally indicates that success or a decision depends on the quality of the attitude, result, or method introduced before it.
Examples
計画を実行できるかどうかは、住民との合意いかんだ。
Whether the plan can be carried out depends on reaching an agreement with the residents.
Words used
成功するかは準備のいかんだ。
Whether we succeed depends on our preparation.
Words used
契約を更新するかどうかは、今後の交渉の結果いかんだ。
Whether the contract is renewed depends on the outcome of future negotiations.
Words used
Study notes
1. Origins, structure, and basic meaning
- Structure: Attach
いかんだto a condition noun to formally state that the outcome depends on the condition's nature or state. - Basic usage:
契約を更新するかどうかは、今後の交渉の結果いかんだ。means that renewal of the contract depends on the outcome of future negotiations.
2. Common pitfalls and similar expressions
- Nouns with or without の
- It can follow a noun directly, as in
結果いかんだ, or withの, as in準備のいかんだ. The deciding point is how the condition turns out or is met.
- It can follow a noun directly, as in
- Connecting to a following clause
結果いかんだstates the dependency at the end of a sentence.結果いかんでは中止するconnects it to an action, saying that some possible outcomes would lead to cancellation.

