propensitude
/prə(ʊ)ˈpɛnsɪtjuːd/ /prə(ʊ)ˈpɛnsɪtʃuːd/noun
Inclination, tendency, or propensity to or towards a person or thing. Compare propensity. archaic and humorous in later use. Now rare.
Origin
Early 17th century; earliest use found in John Marston (bap. 1576, d. 1634), poet and playwright. From classical Latin prōpēns-, past participial stem of prōpendēre propend + -itude, after e.g. magnitude.