How Do You Spell UN HEAVIEST?
Pronunciation: [ˈʌn hˈɛviəst] (IPA) 
The incorrect spelling of the word "un heaviest" is likely due to confusion over the prefix "un-" and the correct spelling of "heaviest." The prefix "un-" means "not," and when added to "heaviest," it forms the word "unheaviest." The correct pronunciation of this word is /ʌnˈhɛviəst/, with the stress on the second syllable. Proper spelling is important for clear communication and should be checked carefully to avoid misunderstandings.
