conspicuous

The lavish expenditure of money or acquisition of expensive items as a public display of one's wealth or financial success. In rapidly developing economies, conspicuous consumption becomes more and more prevalent as a means for those who have done well to flaunt their new economic status.

To be noticeably missing from something. You're the loudest one in the class, so of course you're conspicuous by your absence!

Cliché noticeably absent (from an event). (*Typically: be ~; made ~.) How could the bride's father miss the wedding? He was certainly conspicuous by his absence.

to attract attention to oneself. Please don't make yourself conspicuous. It embarrasses me. Ann makes herself conspicuous by wearing brightly colored clothing.

if someone is conspicuous by their absence, people notice that they are not present in a place where they are expected to be Helen was conspicuous by her absence at the meeting yesterday.

Also, conspicuous by one's absence. Glaringly obvious by the fact of not being there. For example, One agenda item concerning publicity is conspicuous by its absence, or The bride's father was conspicuous by his absence. The idea is ancient; it was expressed by the Roman writer Tacitus, concerning the absence of Junia's brother and husband at her funeral procession. [Mid-1800s]

Very obvious through nonattendance. This oxymoron, which goes back to ancient Rome, applies to people or objects that attracted attention because they were expected to be present but weren't. An example would be a close relative who either wasn't invited or chose not to attend a family function. Some literary commentators contend that the phrase has become a cliché, but it's now used so rarely, you may—although at your peril—claim its wit to be your own.