Prefix: affix added to the beginning of a word. combining form: a word part which must attach to a word in order to be useable in a word. suffix: affix added to the end of a word. inflection: affix that gives grammatical meaning such as tense or number. affix: syllable added to a root word to change its meaning. comparative: degree of comparison formed by adding (er). love: root word of lovable. superlative: degree of comparison formed by adding (est). bound morpheme: modified form of a word that occurs only in combination. free morpheme: an independent word.