厚顔無恥こうがんむち I-adj Noun English jmdict 1 adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi) yojijukugo shameless;brazen and unscrupulous 厚顔無恥とはまさにあいつのことだ。 He's such a shameless jerk.