IPA: /ˈskrɔːni/
KK: /ˈskroni/
The quality of being very thin and weak, often in an unhealthy way.
His scrawniness made him look fragile and undernourished.
Scrawniness is derived from "scrawny" (from the dialectal variant of "scrawny" meaning thin or emaciated) and the suffix "-ness" (meaning the state or quality of). The word "scrawniness" refers to the state of being scrawny or excessively thin.
Think of the word 'scrawny' which describes someone very thin, and remember that 'scrawniness' means the quality of being very thin.