We don't have synonyms for palauan yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are palawan and palayan.
(n) :
A language spoken in the Pacific, in the Republic of Palau. It is a member of the Austronesian family of languages, and is considered to be one of two languages in Micronesia belonging to the Western Austronesian group, all others considered to be members of the Oceanic subgroup.
(n) :
A language spoken in the Pacific, in the Republic of Palau. It is a member of the Austronesian family of languages, and is considered to be one of two languages in Micronesia belonging to the Western Austronesian group, all others considered to be members of the Oceanic subgroup.