So I came across someone asking, and realised this is likely to be an issue whenever a new registration window comes up. Masterpost of all the abbreviations I (and hopefully others) have seen on FR - please let me know if (when!) there's anything I've forgotten.
I'll probably think of more in the morning.
Dragon Breeds
WC - Wildclaw
RB - Ridgeback
Imp - Imperial
PC - Pearlcatcher
SD - Skydancer
Noodle - Spiral
Plent/plentiful - Any of the four starter breeds (Mirror, Tundra, Guardian, Fae)
Colours
Obs - Obsidian
Whi - White
Mid - Midnight
Lav - Lavender
Crim - Crimson (not to be confused with the Trading Post dragon!)
Plat - Platinum
Triple - Dragon with all three colours the same
Double - Dragon with two colours the same (most often the primary and secondary)
Monochrome - Dragons with (generally) first two or all three colours in the whites, greys and blacks
Pastel - Any pale colour - typically Seafoam, Ivory, Lavender, Rose
Neon Wing - Dragons with dark Primary colours and bright Secondary colours
Tron - Dragons with dark Primary and Secondary colours, bright Circuit tertiar
x/x/y - Dragon with the first two colours the same, tertiary is different
x/y/y - Dragon with last two colours the same, primary is different
x/y/x - Dragon with first and last colours the same, secondary is different
[colour]/[colour]/x - First two colours matter, last can be anything (or within a range)
[colour]-range - Any colour within the appropriate area of the colour wheel
Genes
Iri - Iridescent
Shim - Shimmer
Gem - Gembond
Circ - Circuit
Under or Belly - Underbelly
SG - One gene is anything other than Basic
DG - Two genes are anything other than Basic
TG - All three genes are anything other than Basic
Other Dragon Terms
Progenitor - Your first two dragons. Unsellable, untradeable.
Gen - Generation
Gen 1/First Gen - Parentless dragons that are not progenitors. Only found by hatching Unhatched Eggs
RTB - Ready to Breed. May be followed/preceded by number of days until dragon is ready
Thread Prefixes
[ T ] - Trade OR, in Bug Report Forum, a thread 'tracked' by admins
[ S ] - Sell
[ R ] - Reserve (in Dragon Sales or similar), Raffle (in Raffles forum)
[ W ] - Wanted
[ LF ] - Looking for (often interchangeable with Wanted, but more commonly used for studding requests
[ O ] - Offer
[ H ] - Have
[ A ] - Auction
[ B ] - Buying
[ LTB] - Looking To Buy
[B/T/S] - Buying/Trading/Selling - may be any combination of previous letters
Sales Threads (and similar)
Dominance Discount - Thread offers treasure marketplace items for a full (10%) or partial discount due to having dominance that week. May just be 'Discount'
[ OFF ] - Thread originator is offline (many variations)
[ ON ] - Thread originator is online (many variations)
[Interest Check] - Thread originator wants opinions on what they're planning to offer
[Price Check] Thread originator wants estimations of the worth of what they're planning to offer
OBO - Or Better Offer
Hatchery - A thread set up to sell dragons bred by the thread's originator
Stud - A dragon from outside the clan used to make a breeding pair. Typically refers to male, may be either
Studette - Female Stud
Stud(ette) - Generally means looking for at least one of each
Split and share - Standard means of dividing a nest produced by studding. Each dragon owner gets half the clutch, remaining dragon is sold and the proceeds split. Variations are common.
Coliseum
Coli - Coliseum
Glass Cannon - Dragon statted primarily with Strength and Quickness, Physical attack skills
Mage - Dragon statted primarily with Intelligence and Quickness, Magic attack skills
Tank - Dragon statted primarily with Vitality (and most likely Strength)
Healer - Dragon with mostly support skills like Healing and Shielding
Elim - Eliminate
Loot - Any item that drops after a battle
Grind - To spend time in the coliseum in order to achieve a goal (usually levelling dragons or making money)
Farm - To spend time in the coliseum in order to receive a specific item (food or familiars are most common)
General Terminology
KS - Related to/from the Kickstarter campaign (may be familiars, skins, apparel...)
T or t - Treasure, the main currency of FR
G or g - Gems, the pay-for currency of FR
fp or FP - Food points, of which every food item in the game is worth a certain number.
Fam(s) - Familiar(s)
Dom - Dominance
Push/push week - Generally an attempt at dominance
Exalt fodder - Cheap dragons that are most likely to be exalted
CR - Crossroads Request, ie sending a trade for a dragon via the Crossroads page.
Sticky - Thread 'stuck' to the top of a forum
Doll - Deity dolls/puppets/idols, collectible items used for an achievement
Cape - Any of the cape apparel items that drop in the Coliseum
Boon - Boon of Fertility, used to instantly hatch a nest
RP - Roleplay
RNG - Random Number Generator, which determines most outcomes on the site (such as hatchling colours, which Swipp/Crim trades come up etc). Blamed for most things.
Lore - Canon FR backstory and information about the Flights and dragon breeds. Found in the Encyclopedia
I'll probably think of more in the morning.
Dragon Breeds
WC - Wildclaw
RB - Ridgeback
Imp - Imperial
PC - Pearlcatcher
SD - Skydancer
Noodle - Spiral
Plent/plentiful - Any of the four starter breeds (Mirror, Tundra, Guardian, Fae)
Colours
Obs - Obsidian
Whi - White
Mid - Midnight
Lav - Lavender
Crim - Crimson (not to be confused with the Trading Post dragon!)
Plat - Platinum
Triple - Dragon with all three colours the same
Double - Dragon with two colours the same (most often the primary and secondary)
Monochrome - Dragons with (generally) first two or all three colours in the whites, greys and blacks
Pastel - Any pale colour - typically Seafoam, Ivory, Lavender, Rose
Neon Wing - Dragons with dark Primary colours and bright Secondary colours
Tron - Dragons with dark Primary and Secondary colours, bright Circuit tertiar
x/x/y - Dragon with the first two colours the same, tertiary is different
x/y/y - Dragon with last two colours the same, primary is different
x/y/x - Dragon with first and last colours the same, secondary is different
[colour]/[colour]/x - First two colours matter, last can be anything (or within a range)
[colour]-range - Any colour within the appropriate area of the colour wheel
Genes
Iri - Iridescent
Shim - Shimmer
Gem - Gembond
Circ - Circuit
Under or Belly - Underbelly
SG - One gene is anything other than Basic
DG - Two genes are anything other than Basic
TG - All three genes are anything other than Basic
Other Dragon Terms
Progenitor - Your first two dragons. Unsellable, untradeable.
Gen - Generation
Gen 1/First Gen - Parentless dragons that are not progenitors. Only found by hatching Unhatched Eggs
RTB - Ready to Breed. May be followed/preceded by number of days until dragon is ready
Thread Prefixes
[ T ] - Trade OR, in Bug Report Forum, a thread 'tracked' by admins
[ S ] - Sell
[ R ] - Reserve (in Dragon Sales or similar), Raffle (in Raffles forum)
[ W ] - Wanted
[ LF ] - Looking for (often interchangeable with Wanted, but more commonly used for studding requests
[ O ] - Offer
[ H ] - Have
[ A ] - Auction
[ B ] - Buying
[ LTB] - Looking To Buy
[B/T/S] - Buying/Trading/Selling - may be any combination of previous letters
Sales Threads (and similar)
Dominance Discount - Thread offers treasure marketplace items for a full (10%) or partial discount due to having dominance that week. May just be 'Discount'
[ OFF ] - Thread originator is offline (many variations)
[ ON ] - Thread originator is online (many variations)
[Interest Check] - Thread originator wants opinions on what they're planning to offer
[Price Check] Thread originator wants estimations of the worth of what they're planning to offer
OBO - Or Better Offer
Hatchery - A thread set up to sell dragons bred by the thread's originator
Stud - A dragon from outside the clan used to make a breeding pair. Typically refers to male, may be either
Studette - Female Stud
Stud(ette) - Generally means looking for at least one of each
Split and share - Standard means of dividing a nest produced by studding. Each dragon owner gets half the clutch, remaining dragon is sold and the proceeds split. Variations are common.
Coliseum
Coli - Coliseum
Glass Cannon - Dragon statted primarily with Strength and Quickness, Physical attack skills
Mage - Dragon statted primarily with Intelligence and Quickness, Magic attack skills
Tank - Dragon statted primarily with Vitality (and most likely Strength)
Healer - Dragon with mostly support skills like Healing and Shielding
Elim - Eliminate
Loot - Any item that drops after a battle
Grind - To spend time in the coliseum in order to achieve a goal (usually levelling dragons or making money)
Farm - To spend time in the coliseum in order to receive a specific item (food or familiars are most common)
General Terminology
KS - Related to/from the Kickstarter campaign (may be familiars, skins, apparel...)
T or t - Treasure, the main currency of FR
G or g - Gems, the pay-for currency of FR
fp or FP - Food points, of which every food item in the game is worth a certain number.
Fam(s) - Familiar(s)
Dom - Dominance
Push/push week - Generally an attempt at dominance
Exalt fodder - Cheap dragons that are most likely to be exalted
CR - Crossroads Request, ie sending a trade for a dragon via the Crossroads page.
Sticky - Thread 'stuck' to the top of a forum
Doll - Deity dolls/puppets/idols, collectible items used for an achievement
Cape - Any of the cape apparel items that drop in the Coliseum
Boon - Boon of Fertility, used to instantly hatch a nest
RP - Roleplay
RNG - Random Number Generator, which determines most outcomes on the site (such as hatchling colours, which Swipp/Crim trades come up etc). Blamed for most things.
Lore - Canon FR backstory and information about the Flights and dragon breeds. Found in the Encyclopedia