Definition of retrogradeness in English:

retrogradeness

noun

rare
  • The quality or fact of being retrograde; backward or regressive tendency.

Origin

Early 18th century; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From retrograde + -ness.

Pronunciation

retrogradeness

/ˈrɛtrə(ʊ)ɡreɪdnəs/