rhymeless

listen to the pronunciation of rhymeless
İngilizce - Türkçe
kafiyesiz
{s} uyaksız
İngilizce - İngilizce
Not rhymable, having no perfect rhymes

Orange is widely considered to be a rhymeless word.

Destitute of rhyme
{s} unrhymed, not rhymed; without rhymes
rhymeless