Pronunciation: [ˈʌn lˈa͡ɪvlɪəst] (IPA) 
The spelling of the phrase "un liveliest" is quite simple when using the International Phonetic Alphabet (IPA). The first syllable of "un" is pronounced as "ʌn," while the second syllable "live" is pronounced as "laɪv." The final syllable "liest" is pronounced as "liəst." When put together, the word is pronounced as "ʌnˈlaɪvliəst." The phrase means the least lively or the most boring in comparison to other things.
The term "un liveliest" does not have a specific dictionary definition as it is a combination of two words: "un" and "liveliest." However, we can provide a definition based on the meanings of the individual words.
The prefix "un-" in English is widely used to indicate the opposite or absence of something. It negates or reverses the meaning of the word it is attached to. In this case, "un-" suggests the lack of or absence of liveliness.
On the other hand, "liveliest" is the superlative form of the adjective "lively." It describes someone or something that exhibits great energy, enthusiasm, or vibrancy. The liveliest entity stands out due to its vitality, animated behavior, or ability to engage others in a vibrant manner.
Thus, combining the word "un" and "liveliest" essentially yields the notion of absence or lack of the liveliest characteristics. It suggests an entity that lacks energy, enthusiasm, or vibrancy. "Un liveliest" refers to the opposite of being the most lively, vibrant, or energetic. It implies a state or condition that is notably less animated, dynamic, or engaging than others.
The word "unliveliest" is derived from the combination of the prefix "un-", which means "not", and the superlative form of the adjective "lively".
The adjective "lively" originated from the Middle English word "lyvely", which evolved from the Old English word "līflīc", meaning "living". It is further derived from the Proto-Germanic word "*liblīkaz", which referred to being full of life or having a vigorous spirit.
The addition of the prefix "un-" negates the meaning of the word, so "unliveliest" indicates the opposite of being lively or lacking energy, enthusiasm, or liveliness.
