crumbly adjective 1noun 1forms 5 adjective1 •Easy to break into small fragments; brittle or friable. noun1 •(slang, offensive) A decrepit old person.If they are right, then why aren't we seeing old crumblies like you on the cover of Vogue? — 2005 formscrumblies · crumblier · more crumbly · crumbliest · most crumbly
