瞎说

to talk drivel / to assert sth without a proper understanding or basis in fact / not to know what one is talking about

to persuade

to speak / to say / to explain / to scold / to tell off / a theory (typically the last character in a compound, as in 日心說|日心说 heliocentric theory)

variant of 說|说[shuo1]

to speak; to talk; to say / to explain; to comment / to scold; to tell off / (bound form) theory; doctrine

blind / groundlessly / foolishly / to no purpose