Pronunciation: [plˈʌməst] (IPA) 
The word "plummest" is spelled with two M's, after the U, as in "plum." The IPA phonetic transcription for this word is /ˈplʌm.ɪst/. The first syllable is pronounced with a short "u" sound as in "cup," and the second syllable is pronounced with a short "i" sound as in "hit." The "-est" ending signifies the superlative form of the adjective "plump," meaning the most full or rounded in shape.
"Plummest" is not a standard word in the English language, and therefore does not have an official dictionary definition. It appears to be a non-standard variation or derivative of the word "plum," which can be defined in different contexts as a noun, adjective, or verb.
As a noun, "plum" refers to a sweet and juicy fruit, often with a smooth skin and a variety of colors. It can also denote a deep reddish-purple color reminiscent of the fruit. In a figurative sense, "plum" can represent something desirable or highly valuable.
As an adjective, "plum" can describe something that is very positive, excellent, or exceptionally good. It can also refer to something that is filled or abundant, often with a sense of satisfaction or contentment.
As a verb, "plum" typically means to dive or fall abruptly or steeply, often with a reference to water or a vertical descent.
Without proper context for the word "plummest," it is difficult to give a precise definition. However, based on the standard meaning of "plum," it could possibly be interpreted as a superlative form of "plum," signifying the highest degree of desirability, excellence, abundance, or prominence.
