De-indexed

The act of a website being removed from the search results page. Typically being de-indexed comes from a violation or manipulation to the rules setup by search engines like Google. These infractions are in the form of spammy content, toxic linking or keyword stuffing as well as others.

De-indexed is used synonymously with a Google Manual Penalty but is not always the case. It could be a human error that you had made on the back-end of your site that is causing the de-indexation. Depending on what was the cause of deindexation you will need to take appropriate action to have it reversed.