Free Morphemes and Bound Morphemes Morphemes that can stand alone to function as words are called free morphemes. They comprise simple words (i.e. words made up of one free morpheme) and compound words (i.e. words made up of two free morphemes). Examples: Simple words: the, run, on, well There is combination with affixxation at the word are called bound morphemes. There is combination with affixation at the word, like suffix and prefix. Examples: pre-, dis-, in-, un-, -ful, -able, -ment, -ly, -ise pretest, discontent, intolerable, receive references http://vlearn.fed.cuhk.edu.hk/wordformation/internalstructure/freemorphemes/