[EdwardWarlock]

np= also means No Problem
tyvm= thank you very much
tysm= thank you so much
pr= party raid (you about attack another party, like in abyss)
fbz= free battle zone or bz=battle zone (already stated)
mb= magic burst (mage skill, sometimes people yell this at me when nova in cooldown)
btw= by the way
brb= be right back
brt= be right there
rez= resurrection (cleric skill)
d/c= disconnected from server (offline)
plz= please
ppl= people
sc= Spark Cash (too many people ask me what this is)
k/kk= okay

omfg=oh my fucking god
wth= what the hell
wtf= what the fuck
(people still ask about these 3)

rou= roumen
eld/edly= elderine
uru= uruga
ht= helga's tomb
dc=dragon's cave