A suffix is a form of morpheme that is always added at the end of the root word and this forms a new word with a new meaning. From the choices above, the word that has a suffix is the word "awkwardly". The suffix used is "-ly". This suffix is connected to the word in order to create an adverb. The word "Awkward" is an adjective, but when added with the suffix "-ly" it now becomes an adverb.