No Rhyme, No Reason

Not many monosyllables in English have no rhyme,
And those I know exhibit certain features all the time.
They always end in consonants, especially T-H.
(Oh dear, there’s one right now; I need a near-rhyme such as “sage.”)
I once was taught the only word that qualified was “month.”
Whoever made that claim was quite the underthinking dunth.
Consider many ordinals, like “fifth,” “sixth,” “twelfth,” and “ninth.”
The last one doesn’t rhyme with “plinth”; it’s closer yet to “pint.”
Beyond them, we have “width” and “breadth” and sound effects like “boing,”
Discounting words that don’t appear in lexicons, like “sproing.”
(I used to think another good example would be “mulct,”
But then I noticed past-tense words could rhyme it, so I sulked.)
I’d rather skip the names of folks and places such as Bruges,
In part because they may have rhymes in English words like “luge.”
My sources say that “zhuzh” is slightly different in the vowel.
And “welsh” is not a verb that I can use without a scowl.
Some fairly recent borrowings like “borscht” can work as well.
I’m sure I’ve missed a few, but these are all I care to tell.