Pronunciation: [mˈə͡ʊst ʌnwˈe͡ɪnɪŋ] (IPA) 
The spelling of the word "most unwaning" is a combination of suffixes and two words. The suffix "-est" is added to "most" to create the superlative form. "Unwaning" is the root word, meaning "never decreasing" or "constant". The pronunciation of "most unwaning" is /moʊst ʌnweɪnɪŋ/. The "o" in "most" is pronounced as "oh", the "a" in "waning" is pronounced as "ah", and the stress lies on the second syllable of "unwaning".
The phrase "most unwaning" is formed by combining the word "most" and the adjective "unwaning".
The word "unwaning" is derived from the verb "wane", which means to decrease or diminish. In this case, the negative prefix "un-" has been added to "waning", reversing its meaning to indicate something that does not diminish or decrease.
The etymology of "wane" can be traced back to the Middle English word "wanen", and further to the Old English word "wanian". This Old English term is believed to have developed from the Proto-Germanic root *wani, meaning to lessen or decrease.
Overall, the formation of the phrase "most unwaning" combines the intensifying adverb "most" with the adjective "unwaning", ultimately describing something that does not diminish to the greatest extent.
