rhyme up

Verb

rhyme up (third-person singular simple present rhymes up, present participle rhyming up, simple past and past participle rhymed up)

1. (transitive, often blues or rhythm and blues) To make a non-rhyming song, poem, etc., into a rhyming one.
   • The song is good, but I still gotta rhyme it up.
2. (often, transitive) To come up with a rhyme for (a word, name, person, subject, etc.).
   • He rhymed up the kid's name with funny words to make an improvised song.