from Wiktionary, Creative Commons Attribution/Share-Alike License
- suffix Forming nouns denoting a morpheme used in word formation joined to a word in the specified way (e.g.: infix = "attached within", circumfix = "attached around").
- suffix Forming verbs denoting fastening or attaching (something) in the specified way (e.g.: suffix = "append", prefix = "preface").
The common element of prefix, suffix, and affix — all ultimately from Latin figere, to fasten. (Wiktionary)