inauthentic

[in-aw-then-tik]

Origin of inauthentic

First recorded in 1855–60; in-3 + authentic
Related formsin·au·then·ti·cal·ly, adverbin·au·then·tic·i·ty [in-aw-then-tis-i-tee, -thuh n-] /ˌɪn ɔ θɛnˈtɪs ɪ ti, -θən-/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for inauthentically

inauthentic

adjective
  1. not authentic; false
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

Word Origin and History for inauthentically

inauthentic

adj.

1783, from in- (1) "not, opposite of" + authentic.

Online Etymology Dictionary, © 2010 Douglas Harper