adjective

Feeling resentment at having been unfairly treated.

they were aggrieved at the outcome

resentful,affronted,indignant,disgruntled,discontented,angry,distressed,unhappy,disturbed,anguished,hurt,pained,upset,offended,piqued,in high dudgeon,riled,nettled,vexed,irked,irritated,annoyed,put out,chagrined