unbelieve
unbelieve
(ˌʌnbɪˈliːv)vb (tr)
1. to disbelieve or distrust something
2. to abandon a particular belief
vb (intr)
to be unbelieving
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014