grandiose
adjectiveadjective 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 grandiose in the Oxford Advanced Learner's Dictionary