noun, na-adjective
unreasonable and unjust; unconscionable
A yojijukugo describing actions or demands that are both unreasonable and morally wrong. Often used in formal or critical contexts.
彼の要求は無理非道だ。
His demands are unreasonable and unjust.
無理非道な命令に従うわけにはいかない。
I cannot obey such an unconscionable order.
A yojijukugo combining 無理 (unreasonable) and 非道 (unjust, inhuman). The exact historical derivation is uncertain, but it likely emerged as a literary or formal compound.