speech or writing designed to obscure, mislead, or impress; bunkum: The claims were just a lot of malarkey.
hogwash, bombast, silliness, babble, giddiness, bunk, baloney, foolishness, balderdash, drivel, poppycock, rubbish, bull, prattle, gibberish, trash, absurdity, jive
Origin of malarkey
An Americanism dating back to 1925–30; origin uncertain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
slang nonsense; rubbish
Word Origin for malarkey
C20: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
also malarky, "lies and exaggerations," 1924, American English, of unknown origin. It also is a surname.
Online Etymology Dictionary, © 2010 Douglas Harper