Answer:
one or more syllables placed at the end of a base, or root, word
Step-by-step explanation:
A suffix is a morpheme that is attached to a word at the end of it to form a new word, when this happens an adjective or verb is changed to a noun.
For example "lowly", the suffix is "ly".
Suffix could also change the grammatical function of the word it is b+added to e.g play a verb is changed to ''player'' a noun through the suffix "-er".