unrhyme means A line of verse that does not rhyme. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
Etymology
From un- + rhyme.
noun
- A line of verse that does not rhyme.“As in Emily Dickinson there is too a fastidious precision of thought where unrhymes fill the purpose better than rhymes”
verb
- To remove the rhyme or expected rhyme from.“a class of hackwriters arose whose job was to unrhyme the verse chronicles of the trouvere and to render them in the common speech of the day”