Ithkuil is a constructed language created by John Quijada in 2004. It is designed to be a highly expressive language that can convey complex ideas and concepts with a great deal of precision and detail. The language is based on a theoretical model of human cognition and communication, and is intended to be a "philosophical language" that can help people think more clearly and precisely about abstract concepts.

Ithkuil has a very complex grammar and a large number of morphological distinctions, which can make it difficult to learn and use. However, its creator intended it to be a language for personal introspection and exploration, rather than for widespread use. It has attracted a small but dedicated following of enthusiasts who appreciate its potential for deep philosophical and linguistic exploration.
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