From LSWiki

Class: Language Skills
Attribute: Intelligence
Pedagogy: Procedural
Hidden Skill
Language Difficulty: Slightly Easy
Language Speed: Slightly Fast
Language Overlaps:
  Zadjalin: broad
  Kathdax: limited
  Nanomi: limited
  Dethek: slight
  Phglek: slight
  Sperethiel: minimal

The ability to speak and comprehend the Dazask language.  Dazask initially arose as a trade
argot between the various races of the earth's depths.  It has since gradually expanded to
the point where it is a language in its own right.  It serves many of the purposes for the
peoples of the subterranean world that Anglic serves for surface-dwellers, providing
a common tongue for dialogues between peoples.

Trainers

 Leah's Hill: Arvan the Keeper
 Kolond: Morin
 Ranthos: Bias
 Rukhan: Taga
 Shadowmyrk: Aged Recollection
 Yathryn: Miss Chalosia
Association required:
 Crafty Linguists: Janid Suzak Wanders
Guild required:
 Nizari: Hasan Wanders
Quest required