Plural of fellatrix; multiple female performers of fellatio, using English pluralization.
The English pluralization of fellatrix by adding -es, rather than the Italian plural -es form of fellatrices, showing variation in how speakers handled Romance-origin terms.
The choice between 'fellatrices' and 'fellatrixes' was never standardized because the words were so rare—modern English grammar was being decided by usage, and these words simply never got used enough to establish a clear pattern.
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