be able to talk sb deaf and dumb; eloquent; glib-tongued; have a glib (/ready)tongue; voluble; with a tongue that can turn black into white ❍ 蛇蛇硕言，出自口矣。～，颜之厚矣。(《诗·小雅·巧言》)Their easy and grand words|Only issue from their mouths. |Their artful words,like organ-tongues,|Show how un blushing are their faces. ❍ 你这～的挑拨离间，亏你还戴着一个人的面孔！ (郭沫若《屈原》102) You shameless slanderer,you cunning sophist,you beast!