grandiose
adjective disapproving uk/ˈɡræn.di.əʊs/ us/ˈɡræn.di.oʊs/
夸大的，不切实际的；华而不实的
larger and containing more detail than necessary, or intended to seem important or great
grandiose schemes/designs/ideas for making money 不切实际的赚钱计划／方案／想法