The Collaborative International Dictionary
Respectuous
Respectuous \Re*spec"tu*ous\ (r?*sp?k"t?*?s;135), a.
Respectful; as, a respectuous silence. [Obs.]
--Boyle.Respectable. [Obs.]
--Knolles.
Wiktionary
respectuous
a. 1 (context obsolete English) respectful 2 (context obsolete English) respectable