1. (n.) Vain boasting; empty bluster or vaunting; rant.

2. (v. i.) To boast; to brag; to bluster; to rant.

absurdity amphigory babble babblement balderdash bibble-babble blabber blather bluff bluster bluster and bluff blustering boast boastfulness boasting bombast bombastry brag braggadocio braggartism bragging bravado bullying bustle claptrap conceit double-talk drivel drool fanfaronade fiddle-faddle fiddledeedee flummery flurry fluster folderol fudge fuss fustian gabble galimatias gammon gasconade gasconism gibber gibberish gibble-gabble gobbledygook hectoring heroics highfalutin hocus-pocus hot air humbug intimidation jabber jactation jactitation jargon mumbo jumbo narrishkeit niaiserie nonsense pack of nonsense palaver prate prattle rant rigamarole rigmarole rubbish side skimble-skamble splutter sputter stuff and nonsense stultiloquence swagger swashbucklery trash trumpery twaddle twattle twiddle-twaddle vanity vaporing vaunt vauntery vaunting waffling