noun
- a letter, syllable, or group of syllables added at the end of a word or word base to change its meaning, give it grammatical function, or form a new word (Ex.: -ish in smallish, -ed in walked, -ness in darkness)
- anything added to the end of something else
Origin:
ModL suffixum < neut. of L suffixus, pp. of suffigere, to fasten on beneath < sub-, sub- + figere, to fix