(idiomatic) To speak lacking expertise, authority, or knowledge; to invent or fabricate facts. / (idiomatic) To assert something as true or valid; to bluff.

(slang) To talk to someone excessively, or far more than is wanted or appreciated.

(idiomatic) To bore (someone) with excessive talk.

To avoid doing (something) by speaking to someone using (possibly false) logic and reasons.

Used to express enthusiastic support for the referent of that.

(chiefly Canada, US, slang) Synonym of talk out of one's ass.

(idiomatic) To communicate something beyond the level of comprehension of the target.

Third-person singular simple present indicative form of talk over someone's head

simple past tense and past participle of talk over someone's head

present participle of talk over someone's head