1. too great or extreme to be expressed or described in words
Usage: formal

Examples

• The beauty of the sunset was ineffable.
• She felt an ineffable sadness after reading the letter.
• The ineffable joy of holding her newborn child brought tears to her eyes.
• There was an ineffable quality to the ancient cathedral that moved all visitors.
• His ineffable wisdom seemed to come from years of quiet contemplation.
• The ineffable mystery of the universe has puzzled philosophers for centuries.