Con*gen"er*ous*ness

from The Collaborative International Dictionary of English v.0.48

Congenerous \Con*gen"er*ous\, a. [L. congener; con- + genus,
   generis, birth, kind, race. See {Genus}, and cf. {Congener}.]
   Allied in origin or cause; congeneric; as, congenerous
   diseases. [Obs.] --Sir T. Browne. -- {Con*gen"er*ous*ness},
   n. [Obs.] --Hallywell.
   [1913 Webster]