'rhymestered' is derived from the noun 'rhymester,' which comes from the word 'rhyme' with the agent suffix '-ster,' indicating a person who composes rhymes.

'rhymester' was formed in English by combining 'rhyme' and the suffix '-ster,' and the verb form 'rhymestered' is a rare back-formation.

Initially, 'rhymester' referred to a person who writes rhymes, often with a negative connotation, and 'rhymestered' as a verb means to act in that manner.