(of a word) That may be modified by the addition of a suffix / (of a term) Taking the role of a suffix

Capable of being added as a suffix.

plural of suffixation

(transitive) To append (something) to the end of something else.

The process of adding a suffix to a word.

(grammar, linguistic morphology) A morpheme added at the end of a word to modify the word's meaning. / (mathematics) A subscript. / (computing) A final segment of a string of characters.

simple past tense and past participle of suffix

In a suffixal way.

(linguistics, dated) Forming words through the addition of a suffix or suffixes

plural of suffix