Mid 16th century; earliest use found in John Palsgrave (d. 1554), teacher and scholar of languages. From sensual + -ness, originally after Middle French sensualité sensuality.
Definition of sensualness in US English:
sensualness
noun
rare
Sensuality.
Origin
Mid 16th century; earliest use found in John Palsgrave (d. 1554), teacher and scholar of languages. From sensual + -ness, originally after Middle French sensualité sensuality.