windbag

He called her “a silly chattering windbag, an infernal liar, a conceited, gushing, rump-wagging, blethering ass.”

He can still come off like a windbag with a know-it-all air.

Since when has the son of a chief learnt to talk with the loud tongue and windbag swagger of the Amabuna?

And Mr. Spurgeon was no windbag—vox et præterea nihil; no darling pet of old women whose Christianity was flabby as an oyster.