A tritterian is a Twitter user with a high number of tweets. It's the opposite of tweep or rookie. A twitterian is usually perceived positively as they contribute a large amount of useful content for everyone to consume. However, if abused, they can sometimes be viewed negatively should the followers decide the tweets are of low quality and are more like spams.

A twittrian with both a long standing Twitter account and a high number of tweets can also be referred to as an "elitist."