What is the synonym for "ostentatious"?

The term "ostentatious" refers to an extravagant display intended to attract notice or impress others, often in a way that is considered excessive or vulgar. Therefore, its synonym is found in the word "gaudy," which also means overly showy or flashy in a way that lacks good taste. Gaudy typically connotes something that is designed to attract attention through its bright colors or excessive ornamentation, which aligns with the implications of ostentation.

On the other hand, reserved, unnoticeable, and subdued suggest behaviors or appearances that are discreet, understated, or minimalistic, which contrasts with the idea of being ostentatious. This highlights why "gaudy" is the appropriate synonym—it captures the essence of being conspicuously showy, much like ostentatious.