How Do You Spell LUMINOUSNESSES?
Pronunciation: [lˈuːmɪnˌa͡ʊsnəsɪz] (IPA) 
The word "luminousnesses" is a mouthful, both in terms of pronunciation and spelling. It is pronounced as /ˌluːmɪnəsˈnɛsɪz/, with each syllable clearly enunciated. The double "ss" at the end indicates that the word is plural, referring to multiple instances of luminosity. The suffix "-ness" indicates that the word is a noun, denoting the quality of being luminous. It is a rare word that may be difficult to spell correctly if one is not familiar with its etymology and usage.
