grandiose

impressive because of unnecessary largeness or grandeur; used to show disapproval

Impressive or elevating in effect; vimposing; splendid; striking; -- in a good sense.

Latin grandis (large) + -iose (making...)

“She really had the heroical aspect in a grandiose-grotesque, fitted to some lines of Ariosto.”

— George Meredith, Complete Project Gutenberg Works of George Meredith

Selin stood in Nairobi's bustling market, pointing to a tiny matchbox hut. "My new headquarters!" she declared with grandiose flair. Vendors chuckled; her vision was as large as her enthusiasm was loud, making the modest shack look more like a dollhouse than a world-changing empire.

Vera navigated through Nairobi's crowded Kibera market, her eyes narrowing at a vendor's oversized statue of a lion, its exaggerated roar seeming to echo the word 'grandiose' in her mind. The sculpture was so unnecessarily large that it mocked the smaller, more authentic trinkets surrounding it.

“They may feel unstoppable, persecuted, or as if they have a special relationship with God, a great mission to accomplish, or other grandiose or delusional ideas.”