Dedicated

From WoWWiki

An increasing number of players reject both the Casual and Hardcore stereotypes and look for a middle ground between "too little" and "too much". Dedicated players often play every day and frequently raid, but not on the rigorous schedule of Hardcore guilds.

Dedicated players are often people who have played games their entire lives and now dedicate most of their gaming time to WoW, but have learned to balance a full gaming schedule and real life.