To hold a grudge against someone and to be consistently hostile towards them

किसी के खिलाफ दुर्भावना रखना और लगातार शत्रुतापूर्ण होना

English Usage: He really seems to have it in for me since I got the promotion.

Hindi Usage: जब से मुझे प्रमोशन मिला है, वह मेरे खिलाफ खुन्नस रखता है।