Affix (noun) refers to a morpheme attached to a word to modify its meaning or grammatical function, such as a prefix or suffix. In linguistics and morphology, an affix is a unit that attaches to a base word to form a new word or grammatical form. It is pronounced with the stress on the second syllable and the initial 'a' as a schwa, yielding /əˈfɪks/ in standard English.
Full pronunciation guide
