noun, noun or participle which takes 'suru', transitive verb
prompt decision; snap judgment
Used for making a quick decision, often on the spot, without lengthy deliberation. Can be neutral or imply a hasty judgment depending on context.
彼は即断してその場で契約書にサインした。
He made a prompt decision and signed the contract on the spot.
即断
Snap judgments are dangerous. Let's gather more information.