IPA: /ɪˈnɛfəbəl/
KK: /ɪˈnɛfəbəl/
The quality of being too great or extreme to be expressed in words; something that cannot be described or explained.
The beauty of the sunset was filled with ineffableness, leaving everyone speechless.
Ineffableness → It is formed from "in-" (meaning not), "effari" (meaning to speak out), and "-ness" (meaning the state of). The word describes the state of being unable to be expressed in words or spoken about.
Think of 'not' ('in-') being able to 'speak out' ('effari') — that's why ineffableness means something that cannot be expressed in words.