1. to crush or squeeze something so that it becomes wrinkled and loses its shape
Usage: third person singular present tense
2. to collapse or fall down suddenly
Usage: third person singular present tense

Examples

• She crumples the paper and throws it in the trash.
• The old building crumples under the weight of the snow.
• He crumples his shirt when he stuffs it in the suitcase.
• The car’s front end crumples in the accident.
• The child crumples the aluminum foil into a ball.
• Her face crumples with disappointment.
• The cardboard box crumples when dropped.