To annoy or cause trouble to someone.

परेशान करना

English Usage: "Stop hassling me about the details."

Hindi Usage: "मुझे विवरण के बारे में परेशान करना बंद करो।"

A situation causing difficulty or trouble.

समस्या

English Usage: "The whole process was just one big hassling."

Hindi Usage: "पूरा प्रक्रिया सिर्फ एक बड़ी समस्या थी।"