Ostentatious

adjective/os-ten-tay-shuhs/

Meaning

characterised by vulgar or pretentious display; designed to impress or attract notice.

In context
The ostentatious wealth of the mansion was evident in every golden detail.

Remember it

Same 'show' root as ostensible — ostentatious things are a show-off's showcase.

Use it well

Criticises showing off: ostentatious display or wealth; harsher than 'fancy'.