There are several synonyms for the phrase "are ostentatious", which is used to describe something showy and excessively flashy. Some of these synonyms include flashy, gaudy, flamboyant, showy, pretentious, loud, and glitzy. Each of these words conveys the same idea of something being overly ostentatious and attention-seeking. Whether describing a person or object, these words suggest that the individual or item in question is more concerned with outward appearances and impressing others than with substance or authenticity. While some may find these qualities appealing or desirable, others may view them as superficial or insincere.