Some words have no perfect rhymes in English. Can you think of one such word and explain why it might be difficult to find a rhyme for it?

One word that is often cited as having no perfect rhyme in English is 'orange'. It's difficult to find a rhyme for 'orange' because its specific combination of vowel and consonant sounds at the end ('-range') is unique in the English language. There aren't other common words that share that exact ending sound pattern.