backstabber

(redirected from Backstabber (disambiguation))

back·stab

 (băk′stăb′)
tr.v. back·stabbed, back·stab·bing, back·stabs
To disparage or criticize (someone), usually when that person is absent.

back′stab′ber n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

backstabber

(ˈbækˌstæbə)
n
someone who attacks another deceitfully, behind his or her back
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014