Definition of ginormous adjective from the Oxford Advanced Learner's Dictionary

 

ginormous

 adjective
adjective
BrE BrE//dʒaɪˈnɔːməs//
 
; NAmE NAmE//dʒaɪˈnɔːrməs//
 
(British English, informal)
 
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extremely large The monster was ginormous, Dad! Word Origin 1940s (originally military slang): blend of giant and enormous.