no-show

An absence; failure to show up or to make a scheduled appearance, especially at a hotel or a place of employment.

You may want to consider instituting a charge for no-shows. […] Also, you must inform patients, in advance, that there is a charge for no-shows, and what that charge is.

A person or group that does not show up.

Out of fifty people who said they would attend, we only had three no-shows.

Once they were enrolled […] they never did any work, but Frankel would deliver signed time sheets to the district office, collect the checks, and give them to his fake workers. And the no-shows would give Frankel the salary money, which he put into Beth Rachel school.

Ellipsis of no-show sock.

Now some young people are declaring a preference for crew socks, which generally rise to midway up the shin, and thumbing their noses at the ankle and no-show varieties that are staples of the previous generation’s sock drawers.

To fail to show up for something.