WoW Abbreviations compedium

Tired of not understanding what "LFM preferred DPS 4 SM" means? Then this fantastic abbreviations compedium will be very handy:

• Chat:
• AFAIK: As far as I know
• AFK: Away from keyboard
• ATM: At the moment
• Bio: Short for "biological," this refers to fulfilling biological needs (i.e. using the restroom); often used to explain AFKs in groups
• BRT: Be right there
• BTW: By the way
• CBA: Can't be arsed
• DIAF: Die in a fire
• FFS: For f---'s sake
• FTL: For the loss (means "is bad")
• FTW: For the win (means "is good")
• GTFO: Get the f--- out
• IDC: I don't care
• IDK: I don't know
• IIRC: If I recall correctly
• IMHO: In my humble opinion
• IMO: In my opinion
• Inc: Incoming
• LF: Looking for ("LF tank," etc.)
• LF1M/LF2M/etc.: Looking for one more, two more, etc.
• LFG: Looking for group
• LFM: Looking for more (for a group)
• MT: Mistell (means "I sent this message to the wrong channel or person")
• Ofc: Of course
• OMW: On my way
• STFU: Shut the f--- up
• TBH: To be honest
• WC: Wrong channel
• WTB: want to buy
• WTF: What the f---
• WTH: What the hell
• WTS: Want to sell
• WTT: Want to trade
• Forums:
• GG: Good game (often sarcastic)
• GJ: Good job (often sarcastic)
• Imba: Imbalanced; usually means "overpowered"
• IBTL: In before the lock
• L2P: Learn to play
• OP: Original post/original poster
• OT: Off-topic
• QFE: Quoted for excellence
• QFT: Quoted for truth
• QQ: Doesn't "stand for" anything per se; rather, it's an emoticon: it looks like two crying eyes. It basically means "you're complaining," although it can also be used as a verb ("stop QQing").
• TL;DR: Too long; didn't read

Miscellaneous:

• 1h: One-handed
• 2h: Two-handed
• 5SR: Five-second rule (the rule that mana regeneration from spirit only occurs if you haven't spent mana on a spell in the last five seconds)
• Add: An "additional" mob that has been aggroed, usually unintentionally
• Agg/Aggro: Probably short for "aggression" or some related word, it refers to who a mob is attacking -- that player is said to "have aggro" or have "pulled aggro"
• AoE: Area of effect (a spell or effect that takes place over an area, as opposed to working only on a single target)
• AP: Attack power
• Alt: An "alternate" character -- not your main (character)
• BE/Belf: Blood Elf
• BG: Battleground
• AB: Arathi Basin
• AV: Alterac Valley
• EotS: Eye of the Storm
• WSG: Warsong Gulch
• BoE: Bind on Equp
• BoP: Bind on Pick-up
• BoU: Bind on Use
• BS: Blacksmith/Blacksmithing
• Buff: A beneficial spell, or a change to the game that makes a given class/spec stronger
• CC: Crowd control
• DKP: Dragon Kill points, a cover term for a number of systems guilds use to distribute loot (see WoWWiki)
• DND: Do not disturb
• DPM: Damage per mana
• DPS: Damage per second
• DR: Damage reduction (due to armor)
• DS1/DS2/DS3: Class-specific sets of gear that drop from 5-man dungeons. DS1 and DS2 were known as T0 and T0.5, respectively, but that analogy breaks down when it comes to DS3.
• DW: Dual wield
• DoT: Damage over time
• Drae: Draenei
• Eng/Engi/Engy: Engineering
• FA: First Aid
• FP: Flight point/flight path
• FR: Fire resistance
• GTAoE: Ground-targeted AoE (an AoE spell for which the caster can choose a target, like Flamestrike)
• HPM: Healing per mana
• HPS: Healing per second
• HS/Hearth: Hearthstone
• HoT: Heal over time
• IRL: In real life
• LOM: Low on mana
• MA: Main assist
• MAP: Melee attack power
• Mats: Short for "materials;" refers to the ingredients in a crafted item
• ML: Master loot/master looter
  
• Mob: Short for "mobile" (derived from MUDs, where any NPC was either a stationary shopkeeper or mobile; see WoWWiki), this refers in WoW to NPCs, primarily NPCs that are meant to be killed.
• MP5: Mana per five seconds
• MT: Main tank
• NE: Night Elf
• NPC: Non-player character
• NR: Nature resistance
• NW: Netherweave
• Nerf: A change to the game that makes a given class/spec weaker
• OH: Off-hand
• OOM: Out of mana
• OP: Overpowered
• Pat: Patrol
• PBAoE: Point-blank AoE (an AoE spell that radiates out from the caster, like Arcane Explosion)
• Pot: Potion
• Proc: As best as I've been able to figure out, this is short for "Process" "Procedure" (see WoWWiki). What it refers to is things that have a chance to go off when some event happens. For instance, a Fiery enchant has a chance per hit to cause extra fire damage. This ability of the Fiery enchant is known as a "proc;" when it activates and causes the extra damage, one can say that it has "procced," and the activation itself, the extra damage, can also be called a "proc."
• PUG: Pick-up group (a group formed "on the spot" by use of the LFG tool or a channel or something, as opposed to a guild group or some other group of friends)
• RAP: Ranged attack power
• Res/Rez: Resurrect/Resurrection
• RL: Real life
• SR: Shadow resistance
• Spec: Specialization (in a profession or talents)
• T1/T2/etc.: Class-specific sets of gear that drop from raids.
• UD: Undead
• Xmute: Transmute

Zones:

• Eastern Kingdoms:

• EPL: Eastern Plaguelands
• IF: Ironforge
• STV: Stranglethorn Vale
• SW: Stormwind City
• UC: Undercity
• WPL: Western Plaguelands

• Kalimdor:

• Darn: Darnassus
• Exo: Exodar
• Gads/GZ: Gadgetzan
• Org: Orgrimmar
• STM: Stonetalon Mountain
• STP: Stonetalon Peak
• TB: Thunder Bluff

• OL: Outlands:

• BE: Blade's Edge
• HFP: Hellfire Peninsula
• HH: Honor Hold
• NS: Netherstorm
• SH/Shat: Shattrath City
• SMV: Shadowmoon Valley
• Tero: Terokkar
• TM: Thrallmar
• ZM: Zangarmarsh

Instances (5-man):

• RFC: Ragefire Chasm
• WC: Wailing Caverns
• VC/DM: Deadmines
• Stocks: Stockade
• SFK: Shadowfang Keep
• BFD: Blackfathom Depths
• Gnomer: Gnomeregan
• RFK: Razorfen Kraul
• SM: Scarlet Monestary
• GY: Graveyard wing
• Arm: Armory wing
• Lib: Library wing
• Cath: Cathedral wing
• RFD: Razorfen Downs
• Ulda: Uldaman
• ZF: Zul Farrak
• Mara: Mauradon
• ST: Temple of Atal'Hakkar (a.k.a. Sunken Temple)
• BRD: Blackrock Depths
• BRS: Blackrock Spire

• LBRS: Lower Blackrock Spire
• UBRS: Upper Bloackrock Spire (technically a 10-man, but doesn't feel like a raid, in my opinion)
  

• DM: Dire Maul
• Strat: Stratholme
• UD Strat: Undead side of Stratholme
• SC/Live Strat: Scarlet side of Stratholme
• Scholo: Scholomance
• HFR: Hellfire Ramparts
• BF: Blood Furnace
• UB: Underbog
• SP: Slave Pens
• SH: Shattered Halls
• SL: Shadow Labyrinth
• SV: Steamvaults
• BM: Black Morass

Instances (Raid):

• ZG: Zul'Gurub
• AQ20/RAQ: Ruins of Ahn'Qiraj
• AQ40/TAQ: Temple of Ahn'Qiraj
• MC: Molten Core
• Ony: Onyxia
• BWL: Blackwing Lair
• Naxx: Naxxramas
• Kara/KZ: Karazhan

Borrowed from WoW Insider