William Augustus wil·lia·mau·gustus uncommon noun 1. English general; son of George II; fought unsuccessfully in the battle of Fontenoy (1721-1765) SynonymsCumberlandWilliam AugustusDuke of CumberlandButcher Cumberland Related words Broader terms general WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.