From LSWiki

Class: Language Skills
Attribute: Intellect
Pedagogy: Procedural
Practitioner Term: Speaker of Hithal
Hidden Skill
Language Sound: Hissing
Language Difficulty: Slightly Easy
Language Speed: Slow
Language Overlaps:
  Assarith: slight
  Xhax: minimal

The ability to speak and comprehend Hithal, a language spoken primarily by sleklith;
its identifying features derive from their linguistic apparatus, as the tongue consists
mostly of hisses and clicks.  It bears some similarity both to the Xhax of the srazhar
and ancient Assarith.

Trainers

Shatterspire: Catharion
Association:
Crafty Linguists: Janid Suzak Wanders
Guild:
Quest: