I
Below is every MMO & MMORPG term beginning with the letter I:
INC
Abbreviation for ‘incoming’. When a player pulls for a group, he will use this as warning that a mob is incoming.
INT
A common stat that stands for intelligence. Often the primary attribute for spell casters, it usually relates to spell damage and/or mana pool.
IRL
Stands for ‘in real life.’
Instance
A copy of a particular dungeon for a group of players. Instanced dungeons are parallel worlds which let different groups of players explore the same dungeon in separate groups.