snap judgment

A hurried or impetuous decision or finding, as in George was known for making snap judgments on personnel questions; he rarely bothered to investigate further. This expression, which uses snap in the sense of “quick,” was first recorded in 1841.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

Examples from the Web for snap judgment

Historical Examples of snap judgment