From Longman Dictionary of Contemporary Englishsnap judgment/decisionsnap judgment/decisionSUDDENLYa judgment or decision made quickly, without careful thought or discussion → snap
Examples from the Corpus
snap judgment/decision• As I begin to uncover a whole new world myself, I see the folly of that snap judgment.• So his leave-taking is no snap decision.• If the failure occurs higher on the launch, again a snap decision can be fatal.• Consultation and investigation Having your say Employers should avoid making snap decisions in cases of sickness absence.• I will not make a snap decision, Lieutenant.• Maxim was about to explain when the lieutenant obviously came to a snap judgment on his military value and slammed out again.• I just made a snap decision that this was where I wanted to be. 