IPA: /ˈkrʌmblɪnəs/
KK: /ˈkrʌmblɪnəs/
The quality or condition of breaking easily into small pieces.
The crumbliness of the cake made it difficult to slice neatly.
Crumbliness → It is formed from "crumble" (from Old English "cromblian", meaning to break into small pieces) and the suffix "-ness" (meaning the state or quality of). The word "crumbliness" refers to the quality of being crumbly or easily breaking into small pieces.
Think of something that is 'breaking into small pieces' ('crumble') and the '-ness' indicating a state. This helps you remember that crumbliness means the quality of being easily broken into crumbs.