big up

verb bigs, bigging or bigged

(tr, adverb) slang to make important, prominent, or famouswe'll do our best to big you up

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