disgruntle

verb

Etymology: Etymology tree Latin dis- Old French des-bor. Latin dis-bor. Middle English dis- English dis- English gruntle English disgruntle From dis- (intensifier) + gruntle (“grumble, grunt”).

1. To make discontent or cross; to put in a bad temper.

   “A pregnant woman who ordered pizza in Florida was stabbed 14 times by a delivery driver who police say was disgruntled over her $2 tip.”