(noun) indigestion; ill humor; disgruntlement
Mark and D.L.'s dyspeptic traveling companion
describing Sternberg in Westward
dyspepsia of letters to the Times
I stared out the window at the dyspeptic workaday faces
I went down to the sitting-room, slunk unnoticed past the dyspeptic Sir Herbert
When they say this, I feel dyspeptic and misunderstood