RANT

Rant ( n. ) - High-sounding language, without importance or dignity of thought; boisterous, empty declamation; bombast; as, the rant of fanatics.

Rant ( v. i. ) - To rave in violent, high-sounding, or extravagant language, without dignity of thought; to be noisy, boisterous, and bombastic in talk or declamation; as, a ranting preacher.