A word element at the end of the root that changes or adds to its meaning is a suffix.
Like prefixes, suffixes are a type of affix. This means that when added to a word base, they create a derivative or inflectional form of this word, with a new meaning.
For example,
- adding the suffix -ly to an adjective makes it an adverb (commercial - commercially);
- adding the suffixes -able or -ible to a verb makes it an adjective which means "fit or liable to be ..." (break - breakable)
