The phonetic transcription of "whatness" is /ˈwɒtnəs/ in British English and /ˈwɑːtnəs/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "whatness": quiddity, character, nature, substance, essence.
Example usage of "whatness": "We debated the whatness of art for hours.". More examples on the page.