Dubyuh du·byuh uncommon noun 1. 43rd President of the United States; son of George Herbert Walker Bush (born in 1946) SynonymsBushGeorge BushGeorge W. BushGeorge Walker BushPresident BushPresident George W. BushDubya Related words Broader terms President of the United States WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.