Would it be “cit/ies” or “citie/s”? I’m just starting morphology and I got confused about it.
The plural noun cities may be divided into two morphemes:
cit(y) – free morpheme (also known as the root word)
-ies – bound morpheme (also identified as a suffix)
This type of morphological process is inflectional because there has been a grammatical change to the root word: pluralisation (or an increase in number).
Also note that city has an irregular plural form in writing (not speech) as, by convention, if the word ends in a consonant + y then ‘y’ changes to ‘ies’.
Not entirely relevant to your question but interesting nonetheless.