瞎说

瞎说	xiā shuō	to talk drivel / to assert sth without a proper understanding or basis in fact / not to know what one is talking about
瞎	xiā	blind / groundlessly / foolishly / to no purpose
说	shuì	to persuade
说	shuō	to speak; to talk; to say / to explain; to comment / to scold; to tell off / (bound form) theory; doctrine
说	shuō	variant of 说