noun
pain; anguish; suffering; hardship
Refers to the degree or quality of being painful, distressing, or hard to bear. Often used to describe emotional or physical suffering as a state or feeling.
See also: 苦しみ
彼の苦しさが伝わってきた。
I could feel his pain.
生活の苦しさに耐えられなかった。
I couldn't endure the hardship of life.