Entish

Entish is a constructed language from the fictional works of J.R.R. Tolkien. It is the language spoken by the Ents in Middle-earth.

Ents are not hasty creatures; they take their time. Even their language is "unhasty". In fact, their language appears to be based on an ancient form of Common Eldarin, later enriched by Quenya and Sindarin, although it includes many unique 'tree-ish' additions. There are actually two different languages: Old Entish and "New Entish".

Read more about Entish:  Old Entish, New Entish