即決

1. Origins, structure, and basic meaning

• Structure: 即決 (そっけつ) is a noun that also forms a する verb for an immediate decision made on the spot.
• Basic usage: It describes deciding immediately because conditions are favorable or avoiding a rushed decision on an important contract.
  • 条件が良かったのでその場で即決した。 — The conditions were favorable, so I decided on the spot.
  • 大切な契約を即決するのは避けたい。 — I want to avoid making an immediate decision on an important contract.

2. Common pitfalls and similar expressions

• Speed of a decision
  • 即決 emphasizes deciding without delay, while 決定 more broadly names a decision without specifying how quickly it was made.