IPA: /dɪˈstrɛs.fəl.nəs/
KK: /dɪˈstrɛs.fəl.nəs/
The condition of causing worry, pain, or suffering.
The distressfulness of the situation made it hard for her to concentrate.
Distressfulness → It is formed from "distress" (from Old French *destresse*, meaning extreme anxiety or pain) and "-ful" (meaning full of) and "-ness" (meaning the state of being). The word "distressfulness" means the state of being full of distress or anxiety.
Think of being 'full of' distress and the 'ness' indicating a state — that's why distressfulness refers to a state of being full of distress.