Open English Wordnet
Verbs
(v)fall apart, go to pieceslose one's emotional or mental composure“She fell apart when her only child died”
(v)crumble, fall apartbreak or fall apart into fragments“The cookies crumbled”, “The Sphinx is crumbling”
(v)break, separate, split up, fall apart, come apartbecome separated into pieces or fragments“The figurine broke”, “The freshly baked loaf fell apart”