godan verb (-ku), transitive verb
to say (derogatory); to spout; to babble
Derogatory verb for speaking, implying the speaker is talking nonsense, babbling, or saying something worthless. Often used in rough or contemptuous speech.
何をほざいてるんだ、この野郎。
What the hell are you babbling about, you bastard?
あいつはいつもわけのわからないことをほざく。
That guy is always spouting nonsense.