outpromise

outpromise

(ˌaʊtˈprɒmɪs)
vb (tr)
to promise more than
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The Republicans should not try to match that or outpromise him.