na-adjective
haughty; arrogant; overbearing
Describes an attitude of extreme pride and looking down on others. Often used in formal or written contexts.
彼の傲慢不遜な態度に、周囲は呆れていた。
People around him were disgusted by his arrogant attitude.
傲慢不遜な発言で、彼は多くの支持を失った。
He lost a lot of support because of his overbearing remarks.
A yojijukugo combining 傲慢 (arrogant) and 不遜 (insolent). The exact historical derivation is uncertain, but it is a compound of two Sino-Japanese words with similar meanings.