He is a shameless fellow―a brazen faced fellow.
恥知らずだ - 斎藤和英大辞典
He is brazen-faced―brazen-browed―brass-visaged―as bold as brass―impudent―shameless―unblushing―barefaced―a cheeky fellow―a cool hand―She is a saucy girl.
面{つら}の皮が厚い - 斎藤和英大辞典
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Copyright (C) 1994- Nichigai Associates, Inc., All rights reserved. 「斎藤和英大辞典」斎藤秀三郎著、日外アソシエーツ辞書編集部編