I thought it was a well known fact that the word"orange" is one of the few words that does not rhyme with anything else, at least that was what we were taught at senior school.
But… there's a number of other English words which have no rhyme partner either… purple and oblige come to mind as well as the oft used whilst, (which, while uncommon here in the colonies, is seen more than occasionally in AB).
Pudie, one of the reasons it is difficult to rhyme is I think beacause it is pronounced differently around the country. For some it would rhyme with 'hinge' for others it would rhyme with 'flange' and yet others would find it rhymes with 'plunge' or 'lozenge'.