Daily
A quest that can be repeated once per day. These are usually level 70 and used for making money or gaining reputation with a faction
Darnassus
Darnassus, home of the Night Elves
DD
Direct Damage. This refers to spells or abilities which deal all of their damage on impact, rather than over time.
DE
Disenchant, create enchanting materials from uncommon, rare, or epic items.
Debuff
The opposite of a buff, usually a spell that lowers the target's attributes. Debuffs can sometimes be dispelled by certain spells or abilities.
DM
Dire Maul, an instance in Ferelas. Sometimes means Deadmines, an instance in Westfall
DoT
Damage over time. This refers to spells that cause damages in multiple ticks over a period of time
DPS
Damage Per Second
Durn
Old Hillsbrad Foothills, a Caverns of Time instance in Tanaris. Refers to Durnholde Keep, which you must escape from in the instance.
EotS
Eye of the Storm, a 15-man battleground with four towers for controlling and a flag in the middle for capturing.
Epic
Other than legendary, the rarest and highest quality type of equipment available
Farm
Content that doesn't pose a high amount of challenge. Can refer to many things from gathering materials to repeating a raid encounter that has been defeated many times.
FFA
Free For All, a type of looting where anyone can loot any corpse
FTL
For The Loss, used to express disapproval of a player, ability, strategy, or anything else.
FTW
For The Win, used to express approval of a player, ability, strategy, or anything else.
Gank
A term used when a player kills another player who has little or no chance to win, such as while already engaged in combat.
GCD
Global Cool Down. Activating most abilities or spells causes this to begin, blocking the player from using any spell for between 1 and 1.5 seconds
GM
Game Master. Someone employed by Blizzard Entertainment to assist and help players. Also can mean Guild Master. Also refers to Gold Mine, a node captured in Arathi Basin.
Gnomer
Gnomeregan, an instance in Dun Morogh
Green
Uncommon level items. The lowest quality of items that can be disenchanted and the most common type of enchanted gear. Better than whites or grays, worse than blues and purples.