The Collaborative International Dictionary
Stomachous
Stomachous \Stom"ach*ous\, a. [L. stomachosus angry, peexish. See Stomach.] Stout; sullen; obstinate. [Obs.]
With stern looks and stomachous disdain.
--Spenser.
Wiktionary
stomachous
a. (context obsolete English) bitter, resentful.