妥当

1. Origins, structure, and basic meaning

• Structure: 妥当 is read as だとう and describes a judgment as reasonable in light of evidence or something as appropriate for given conditions.
• Basic usage: It can evaluate a conclusion as 妥当です or ask whether a size or level is suitable with 妥当か.

2. Common pitfalls and similar expressions

• A judgment supported by evidence
  • Use その結論は妥当です when evaluating whether a conclusion is reasonable based on the available material. Example: 集めた資料から考えると、その結論は妥当です。
• Suitability for a condition
  • 人数に対して妥当か asks whether the size is appropriate relative to the number of participants. Example: 参加人数に対して会場の広さが妥当か検討しました。