‘Post-truth’

According to Oxford Dictionaries, "After much discussion, debate, and research, the Oxford Dictionaries Word of the Year 2016 is post-truth – an adjective defined as ‘relating to or denoting circumstances in which objective facts are less influential in shaping public opinion than appeals to emotion and personal belief’." You can read more about it here. 

From year's past Oxford's Word of the Year (US):
2015 -  ‘emoji’
2014 - vape
2013 - selfie
2012 - GIF (verb)
2011 - squeezed middle
2010 - refudiate
2009 - unfriend
2008 - hypermiling
2007 - locavore
2006 - carbon-neutral
2005 - podcast
2004 - chav