What is another word for apt to crumble?
Pronunciation: [ˈapt tə kɹˈʌmbə͡l] (IPA) 
When something is described as "apt to crumble," it means that it is likely to fall apart, break down, or disintegrate. Other synonyms for this phrase include fragile, weak, unstable, decrepit, rickety, dilapidated, and unsound. These words all describe something that is not sturdy or durable and is at risk of collapsing. Additionally, terms like brittle, flimsy, feeble, and frail can also be used to convey the same idea. When choosing the appropriate synonym, it is important to consider the context in which the phrase is being used and select a word that accurately conveys the degree of vulnerability or instability of the subject in question.
