IPA: /fɔːrˈlɔːrn.nəs/
KK: /fɔrˈlɔrn.nəs/
The state of feeling sad, lonely, or abandoned.
After her friends left, she was filled with a sense of forlornness.
Forlornness is formed from "forlorn" (from Old English *forleosan*, meaning to lose) and the suffix "-ness" (meaning the state or quality of). The word refers to the state of being lost or abandoned, evoking a sense of deep sadness or hopelessness.
Think of the word 'forlorn' which means to be lost or abandoned, and remember that 'forlornness' describes the state of feeling lost or hopeless.