Definition of Ineffable: Ineffable (adjective): Too great, extreme, or beautiful to be expressed or described in words; indescribable. Synonyms: indescribable, unutterable, unspeakable, inexpressible Antonyms: describable, expressible, definable, communicable Memory Tip: Think of “ineffable” as something so powerful or beautiful that it leaves you speechless, like seeing a breathtaking sunset that words can’t fully capture. Conversation…