Do you know nothing rhymes with orange?
There are no words that rhymes with orange. In fact, there are many words that have no rhyme in the English language. “Orange” is only the most famous. Other words that have no rhyme include: silver, purple, month, ninth, pint, wolf, opus, dangerous, marathon and discombobulate.
But just because these words have no ‘perfect rhyme’ doesn’t mean we can’t rhyme with them. Using slant rhyme, we can rhyme with these words anyway.
See Wikipedia, or AskOxford.com for more information.