impassionateness noun2 •The quality of being impassionate (lacking passion).In reference to the regulation of the Temper—(1) Passionateness, (2) Meekness, (3) Impassionateness (if there be such a word to describe a state which rarely exists). — 1871 •The quality of being impassionate (filled with passion).I pour out my whole soul to you. I write by fleeting intervals: my pen runs away with my senses. The impassionateness of my sensations grows upon me. — 1811
