To be judgmental means to criticize or form negative opinions about others too quickly, often without knowing the full story or considering their circumstances. A judgmental person sees someone make one mistake and assumes they know everything about that person's character.

Imagine a new student arrives at school wearing unusual clothes. A judgmental classmate might immediately decide this person is weird or won't fit in, making assumptions based on appearances alone. Someone less judgmental would give the new student a chance, recognizing that people are complex and first impressions don't tell the whole story.

Being judgmental is different from using good judgment, which means making thoughtful decisions based on facts and experience. If someone has broken the last three toys you let them use, you might use good judgment and not let them borrow something fragile. Being judgmental means jumping to unfair conclusions about people's character, choices, mistakes, or differences.