Epenthesis in a sentence as a noun

The problem is interesting, but the solution is too confusing because an -ily word looks and sounds too much like an adverb with an epenthesis.

"Sounds like" is sometimes challenging to automate in software, for example because epenthesis of a vowel may not be enough to remove the association.

Epenthesis definitions

noun

the insertion of a vowel or consonant into a word to make its pronunciation easier; "the insertion of a vowel in the plural of the word `bush' is epenthesis"