This is the 3639th most frequent Korean word.
부당
"Unfair" or "unjust."
부당 is used to express unfairness or injustice in actions or decisions.
그 결정은 완전히 부당하다고 생각합니다.
I think that decision is completely unfair.
부당 modifies 대우 to describe the unfair treatment he experienced.
부당한 대우로 인해 그는 회사를 떠났습니다.
He left the company due to unfair treatment.
부당하게 is used as an adverb to describe the unfair manner in which the action of canceling was carried out.