Definition of grandiose adjective from the Oxford Advanced American Dictionary

 

grandiose

 adjective
adjective
NAmE//ˈɡrændiˌoʊs//
 
, NAmE//ˌɡrændiˈoʊs//
 
(disapproving)
 
jump to other results
seeming very impressive but too large, complicated, expensive, etc. to be practical or possible The grandiose plan for a journey across the desert came to nothing. a grandiose opera house He could no longer live the grandiose lifestyle to which he had become accustomed.
See the Oxford Advanced Learner's Dictionary entry: grandiose