The Collaborative International Dictionary of English v.0.48:

Affectuous \Af*fec"tu*ous\ (?; 135), a. [L. affectuous: cf. F.
   affectueux. See Affect.]
   Full of passion or emotion; earnest. [Obs.] --
   Af*fec"tu*ous*ly, adv. [Obs.] --Fabyan.
   [1913 Webster]