na-adjective, noun which may take the genitive case particle 'no', noun
outrageous; preposterous; scandalous; inexcusable
A strong yojijukugo used to condemn something as utterly unacceptable, beyond words, or morally outrageous. Often used in formal or written contexts to express strong disapproval.
His behavior is absolutely outrageous.
Such an excuse is utterly inexcusable.