Prefixes and Suffixes - English Grammar, Educational Game for Children, Grade 2

⁣A suffix is a word part added to the end of a word (for example, -ful). If you add the suffix -ful to the base word, help, the word is helpful. A prefix is a word part added to the beginning of a word or base word (for example, un-). If the prefix un- is added to helpful, the word is unhelpful.