言語道断 ごんごどうだん Also written 言語同断 Meanings な-adjective, の-adjective, Noun outrageous; preposterous; scandalous; inexcusable; absurd; execrable Kanji 言 word. Read as ゴン. 語 language 道 road. Read as ドウ. 断 sever. Read as ダン. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists