Rain, run, right, red, rod, ripe, rush, rock, reign.
Some one syllable words beginning with C and has the Soft C sound:CedeCeeCellCentCereCertCillCineCiteCymeCyst
to and the an a etc.
at, art, ant, aim, ask
Ant, are, all, act, apt, aunt, art
Dog Day Die Dip
France Face Food Fact From Farce Fake Fun Fluke Fan Fur Fig
eve eke
# cat # car # can # com(.com) There Happy
There are many. Here are just a few examples:CameCullCanCopCropCould
Typical examples are ice, ire, hype, dine, bite, pile, ripe, rhyme, and size. *There is a long list of mostly one-syllable words at the related question.
examples of one syllable words
One-syllable words are called monosyllables.