or whas·sup,or wus·sup
what’s going on or happening; what’s up (used as a greeting).
Origin of wassup
First recorded in 1900–05; pronunciation alteration of what’s up (in the same sense)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
slang what is happening?
Word Origin for wassup
C20: from what's 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