瞎说 xiāshuō
[talk irresponsibly] 胡说
乱说。
《老残游记．第五回》：「多吃了两杯酒，在人家店门口，就把这玉大人怎样糊涂、怎样好冤枉人，随口瞎说。」
英语 to talk drivel, to assert sth without a proper understanding or basis in fact, not to know what one is talking about
德语 Unsinn reden (V)
法语 dire des bêtises, mentir