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Grandiose
Excessively Fancy
Use 'grandiose' to describe things overly decorative or complicated, suggesting impracticality or showiness. 
Scaled-Up Reality
'Grandiose' is often used to exaggerate an actual quality, making something ordinary seem extraordinary. 
Critical Tone
When calling plans or ideas grandiose, the speaker may be skeptically pointing out they're overly ambitious. 