Sidhelien

Sidhelien (singular "sidhe") is both the language of the Cerilian Elves and the elven word for the elven race. It is pronounced SHEE-lin.

When used to modify another noun, the singular form is used, e.g., gheallie Sidhe. This may be translated as the proper adjectival form "Elven" or as a plural possessive form "of the Elves" or "Elves' ", but not enough is known about Sidhelien to determine the actual Sidhelien grammatical part-of-speech that is used.