prompt decision; immediate decision; on-the-spot decision; snap decision
《law》summary judgment; summary judgement
彼は物件を見て即決した。
He saw the property and made an immediate decision.
彼女は旅行の誘いに即決で応じた。
She immediately agreed to the invitation for a trip.
社長は面接後、即決で採用を決めた。
After the interview, the CEO made an on-the-spot decision to hire.