ostentatious

This term carries a strong negative connotation, implying a lack of taste or a desperate need for validation. It describes a display of wealth or status that is not merely visible, but aggressively loud and excessive, often crossing the line from luxury into vulgarity.

While a word like flamboyant focuses on the vividness or eccentricity of a style, ostentatious specifically targets the intent to signal social superiority. It is frequently used in critiques of architecture, fashion, or behavior where the scale of the display is disproportionate to the actual necessity of the object.