The list was compiled from the point of view of Received Pronunciation (with a few exceptions for General American), and may not work for other accents or dialects.
The majority of words with antepenultimate stress, such as ambulance,[22] citizen, dangerous and obvious, are non-rhyming.
Also, most words with preantepenultimate stress, such as (un)necessary, logarithm, algorithm and sacrificing, have no rhyme.
[23] A great many end in a present or historical suffix -th, or are plural or participle forms.
Nonce words ending in -ed ('provided with') may produce other potentially refractory masculine rhymes.
[35] There are additional words which are only partially assimilated into English, such as Russian kovsh /ˈkɒvʃ/, which are refractory rhymes.