Seeing as how the other forum is going to be deleted, I decided to move the post here. It's outdated, so when I come back with enough time to read all your suggestions and reupdate the post. After the lines, you'll the the exact same post with its last update and everything as it was. If you have suggestions and new abbreviations, please post the category it falls in so I can update the post and credit you by placing you in the credits list (unless you already are in the list.) Bolding and Italization will be fixed when I get back with more time.
Also, try to not quote the main post in its entirety, but rather the section (s) that you are talking about.
Welcome to the ultimate guide to the forum language of the game! I am your host, VideoGameStar, to help you in an organized manner on how to understand the daily language we use on the forums. Thing is, after seeing a lot of acronyms, and even using them myself, I believe it is time that there should be a thread about this in the forums, since the Clash of Clans and Boom Beach forums has one, why not CR have one?
The thread is a compilation of the entire list of acronyms we use (maybe even individual people), which is based on the information obtained by me and other people who post info here. So without further ado, let's get on with the dictionary!
Fireball- FB, Meteor, Asteroid
Giant- Normal Giant, Peasant Giant
Musketeer- Muskies, Musky
Mini-Pekka- Mpekka, MP
Baby Dragon- BD, Baby D, Baby Drag
Skeleton Army- Skarmy, SA, doot army, SKarmy, Skelly Army
Witch- Skelly Spawner
Goblin- stab goblin, knife goblin, gob, Shank Gob, stabby goblins, Normal Goblins
Spear Goblin- Spear Gob, Spoglins, SG
Valkyrie- Valk, Valky, Spinner
Goblin Hut- Gob Hut, GH, Party Hut
Goblin Barrel- GB, Barrel, Gob Barrel
Skeletons- Larrys, Skellies, doots, 1 elix skellies
Tombstone- TS, tomb, Skelly Hut
Bomb Tower- BT
Giant Skeleton- Giant Skelly, GS, giant doot, Giant Larry, Giant Bomb, Big Larry
Rocket- Missle, Nuclear Bomb
Barbarian Hut- Barb hut, BH, Barb Spawner
Minion Horde- MH, Horde, Min Horde
Tesla- Hidden Tesla, Tesla Coil
Hog Rider- Hog, HR, Mr.T
Inferno Tower- IT, Inferno
P.E.K.K.A- big PEKKA
Inferno Dragon- ID, Trash can on wings, inferno (like IT)
Lava Hound- Hound, LH, Lava (Lava Pups are called Pups)
Fire Spirits- FS, Spirits
Wizard- mage, wiz
Furnace- FS Spawner, FS Hut
Graveyard- GY, Cementery
Ice Wizard- Ice Wiz, Iwiz
Skeleton Barrel- SB
Battle Ram- Ram, BR
Elixir Collector- Pump, EPump, Collector, Elix Collector, Elix Pump, EC, EP
Sparky- Trash can on wheels, Garbage, TCOW,
Miner- Gold Digger
Royal Giant- RG, Royal GG, Regal Collossus
Elite Barbarians- Ebarbs, EB, Ebarbies, (according to TheNewGuyM8: "The card that created a huge war"), Horny Barbs, Elite(s)
Mega Minion- MM
Three Musketeers- Three Muskies, 3M, TM Thres Musk, Three Muskies
Dark Prince- Dank Prince, DP
Electro Wizard- Ewiz, EW, zap wiz, Walking Zap
Ice Spirt- IS, Spirit
Bats- Air Doots, flying skellies, Mini Minions
Ice Golem- IG
Night Witch- NW, Bat Spawner
Goblin Gang- GG, Gang, Gob Gang
Flying Machine- FM
Dart Goblin- Dart Gob, DG, Dart
Executioner- exec, op.exe
Cannon Cart- CC
Mega Knight- MK
Royal Ghost - RG, RGH, Ghost, Mini-RG
Zappies- Mini-Zap, Zappy
Magic Archer- MA
Barbarian Barrel: BB
Royal Hogs: RH
Giant Snowball - Snowball, GiSnow, Snow
Royal Recruits: RR
Goblin Giant: GobGi
Electro Dragon- EDrag, ED, Electro Drag
Common Game Elements
Trophy Matches- Ladder Matches, Ladder, Cup Matches
True Blue/True Red- The game isn't a grid-based one, it has a map underneath that determines the direction troops will take, and the players side are determined by the game even though you are always blue. This is true blue and true red, and it was a common issue in the past.
Tournaments- Tourneys, Custom Tourneys
Challenges- Classics (for Classic Challenge), GC (for Grand Challenges)
Legendary Cards- Leggies, Leggy Cards
Trophies- Cups, Cup Range
Personal Best- PB
Special Offers- Packs
Crown Towers- Crown, Towers
King Tower- King, KT
Deck Slots- none
Clan Chest- CC
Giant Chest- GC
Legendary Chest- LC
Epic Chest- EC
Card Request- Request, req
Features- Special things the game lets you do, such as request feature, clan feature, even tournament tab is a feature.
Overleveling- When your cards are over the average level seen in your arena
Underleveling- When your cards are under the average level in your arena
Trophy Drop- When you begin losing trophies in massive amounts, usually over 200.
Losing Streak- When you lose more than 1 match in a row
Balanced or 50/50- When you lose one and win one match for quite a while
Floating- When you roam around a certain cup range, and are stuck in that cup range without dropping further down.
Winning Streak- when you win more than 1 match in a row.
Tournament Chest- Tourney Chest
Super Magical Chest- SMC
Magical Chest- Magic Chest, MC
Chip Damage- Small Amounts of damage done to the tower.
Draft Chest- none
Multiplayer- might also be abbreviated as MP
Winning Streak Mode (WSM)- Excellent Starting Hands, Excellent Connection and Having level advantage over your opponent
Losing Streak Mode (LSM)- Terrible Starting Hands, Mysterious Connection problems when you have good connection, and your opponents have a level advantage over you.
Frozen Vortex- Being stuck in Frozen Peak for a long time
Balloon or Giant Skeleton Bomb- Suicide Bomb
Bad Manners or BM- When someone uses emotes to try to make fun of you, annoy you, insult you, or make you feel bad in any way.
12 grand- winning a 12-win Grand Challenge Chest
Hidden Stats- Certain Stats that are not shown on their info page, like Initial Attack, Mass and Projectile Speed.
Initial Attack- A hidden Stat that defines how fast a certain card's first attack will be after reaching it's target.
Mass- How a card can push another. Call it like how heavy a certain card is, if you want.
Projectile Speed- How fast a projectile like Arrows or Fireball travels to it's landing spot.
Area of Effect- Another hidden stat for some cards that shows the range of the splash damage a certain card's attack causes. Spells have this known as Radius. Also known as AoE
Disconnect (ed)- DC (ed)
Tilt- When you are on a losing streak or playing overly aggressive in a losing streak.
Glass Cannon- A high DPS but fragile troop.
Mini-Tanks- Smaller troops with higher Hit points, like knight.
Tank- a troop with very high hit points used to take blows for other troops.