What term refers to something marked by conspicuous or showy display?

The term "ostentatious" accurately describes something that is marked by a conspicuous or showy display, often with the intent to impress others. This word conveys a sense of extravagant display that may be perceived as overly elaborate or pretentious. It captures the essence of trying to attract attention through a lavish presentation or style, which aligns perfectly with the definition provided in the question.

In contrast, while "flashy," "gaudy," and "extravagant" all relate to display and grandeur to some degree, they do not fully encapsulate the specific connotation of intention and motivation that "ostentatious" does. "Flashy" tends to imply something that is bright or colorful but might not always convey the same underlying desire to impress. "Gaudy" often refers to something that is excessively ornamented in a tasteless way, suggesting a lack of refinement. "Extravagant" leans more towards a general sense of great expense or lavishness, without necessarily implying the same showy intent. Therefore, "ostentatious" remains the most precise choice for the description provided in the question.