Correct spelling for the English word "most onliest" is [mˈə͡ʊst ˈə͡ʊnliəst], [mˈəʊst ˈəʊnliəst], [m_ˈəʊ_s_t ˈəʊ_n_l_i__ə_s_t] (IPA phonetic alphabet).
There is no dictionary definition for the term "most onliest." "Onliest" itself is not a widely recognized word in standard English. However, it is nonstandard usage that is sometimes used in certain dialects or colloquial speech. Despite its informal nature, we can try to provide a semi-formal explanation of the term within the given word limit.
"Most onliest" is an expression that combines the superlative modifier "most" with the nonstandard word "onliest," which is derived from "only." "Onliest" essentially means "the one and only" or "the singular or unique" out of a group or set of objects or individuals. It emphasizes singularity or exclusivity, asserting that something or someone is the sole representative or the most exceptional in a particular context.
The addition of "most" to "onliest" in the phrase "most onliest" is an extremely informal and redundant construction since "onliest" itself already implies the highest degree of uniqueness. Therefore, "most onliest" can be seen as a nonstandard intensifier, applied for emphasis or exaggeration, even though it does not conform to standard grammar rules.
Overall, "most onliest" is not a widely recognized phrase, and its usage is limited to specific dialects or informal speech. It indicates the utmost singularity, exceptionality, or uniqueness of a person, object, or situation, though its nonstandard nature may lead to some confusion or misunderstandings.
"Most onliest" is not a word in standard English, and it does not have an official etymology. However, it appears to be a non-standard or dialectal variation of the word "only" with an intensifying modifier "most" added to it. The use of "most" as an intensifier is common in some dialects, particularly in African American Vernacular English (AAVE). It adds emphasis to the word that follows it. It's important to note that "most onliest" is not considered grammatically correct or widely accepted in standard English usage.