Question

Which of the following is the best definition of suffix?

one or more syllables placed at the end of a base, or root, word
a device used to help one learn and remember new vocabulary terms
the basic part of a word that is also the source of its essential meaning
one or more syllables placed in front of a base, or root, word

Answer 1

A suffix is one or more syllables placed at the end of a base or root word :)

Answer 2

 a morpheme added at the end of a word to form a derivative

append, especially as a suffix.