Squeezed into a compact mass by irregular folds.(adjective)
Simple past tense and past participle of crumple.(verb)
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Use "crumpled" in a sentence
"Her expression crumpled in the face of his aggression, and she backed away with an offended look in her eyes."
"She gazed up at him, large gray eyes studying his face, and then her expression crumpled and she moved toward him, pressing her face against his plaid."
"Mysteriously Ivanovitch seemed to be losing his composure, as his expression crumpled into a worried frown."