RESENTFUL

adj. embittered, bitter, acrimonious, spiteful, envious, jealous, begrudging, vindictive, indignant, displeased, disgruntled, dissatisfied, unsatisfied, unhappy, peeved, irritated, irked, annoyed, provoked, riled, angry, piqued, irate, furious, incensed, agitated, upset, worked up, antagonistic, hostile Ronald is resentful because you got the promotion that he considered rightfully his