Question

An
is an affix added to certain classes of words to change their grammatical meaning.
GPT-4o mini
An **affix** is a morpheme that is added to a word to change its meaning or grammatical function. Affixes can be prefixes (added to the beginning of a word), suffixes (added to the end), infixes (inserted within a word), or circumfixes (attached to a word at both the beginning and the end). They play a crucial role in word formation and can alter aspects such as tense, number, or part of speech.