अपकृत  =  law
The aggrieved party

खिन्न  =  person
He had every right to feel aggrieved at the decision./feel aggrieved at losing one's job./i felt rather aggrieved not to be invited.

व्यथित  =  person
I felt aggrieved at losing my friend. /i felt aggrieved at losing my job.

असंतुष्ट  =  law
The aggrieved party