01 a. Incapable of being expressed in words; unspeakable; unutterable; indescribable; as, the ineffable joys of heaven.
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Incapable of being expressed in words; unspeakable; unutterable; indescribable; as, the ineffable joys of heaven.“Contentment with our lot . . . will diffuse ineffable contentment over the soul.” — Beattie.