J.R.R. Tolkien created Quenya from influences including Finnish and used it as an Elvish language.
Quenya is one of Tolkien’s most fully developed languages. Its sound and grammar were strongly influenced by Finnish, while its vocabulary and history belong to Tolkien’s invented linguistic world. In Middle-earth, Quenya was associated especially with the High Elves and with the ancient tradition of the Noldor.
Tolkien did not create a single generic “Elvish” language. Sindarin is another major Elvish language, and it became more widely spoken in much of Middle-earth during the Third Age. Quenya often functions as a formal, historical or ceremonial language, while Sindarin is more commonly used in everyday dialogue in The Lord of the Rings.
The languages were central to Tolkien’s creative method: he often constructed histories and peoples around linguistic relationships. Quenya is therefore not merely a set of invented words, but part of a larger family history involving the Elves and their migrations.