The spelling of the word "unlivelier" can be explained using IPA phonetic transcription. The word is pronounced as ʌnˈlaɪvliər, with the stress on the second syllable. The prefix "un-" indicates that the word is the opposite of "livelier", meaning less lively or less active. The "-lier" suffix is added to the end of the word to indicate a comparative degree. The added "-er" changes the word from an adjective to a comparative adjective, indicating a greater or lesser extent of the quality being described.
The word "unlivelier" is derived from the combination of two separate words, "un-" and "livelier".
"Un-" is a prefix in English which is used to indicate negation or reversal. In this case, it simply means "not" or "lacking in".
"Livelier" is the comparative form of the adjective "lively". It comes from the Middle English word "lively" which means "full of life, active, or vigorous". The suffix "-er" is added to form the comparative degree, indicating a higher degree of the quality described by the adjective.
Therefore, when combined, "unlivelier" is a word that means "less lively" or "not as lively". It describes something or someone that is lacking the energy, vibrancy, or liveliness associated with being lively.