noun, na-adjective
heinous; treacherous; atrocious
A strong yojijukugo describing extreme betrayal, wickedness, or inhuman acts, often in a historical or dramatic context.
彼の裏切りはまさに大逆無道の行為だった。
His betrayal was truly a heinous and treacherous act.
The history book records a person executed for the crime of high treason and inhumanity.