suffix

n. affix added on to the end of a word; word part added to the end of a word to change its meaning (Grammar)

v. add an affix to the end of a word so as to alter its meaning (Grammar)

In grammar, a suffix — a form of affix — follows the morpheme to which it attaches. Suffixes can be inflectional or derivational.An inflectional suffix is sometimes called a desinence.Suffixes appear as additions at the end of a word or at the end of part of a word.
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Noun
1. an affix that is added at the end of the word
(synonym) postfix
(hypernym) affix
Verb
1. attach a suffix to; "suffix words"
(antonym) prefix
(hypernym) affix
(derivation) suffixation

n. suffix, ending

n. extension, suffix