Affixes are linguistic elements that are added to words to modify or change their meaning, grammatical function, or both. In linguistics, an affix is a morpheme, the smallest unit of meaning in a language, attached to a root word. Affixes can be prefixes, which are attached to the beginning of a word, or suffixes, which are attached to the end of a word. There are also infixes inserted within a word, but they are much less common. Affixes can alter the tense, number, gender, or case of a word or change its meaning entirely. For example, the prefix “un-” added to the word “happy” changes the word’s meaning to “unhappy.”
In special education, affixes are important to teach because they can help students decode and understand the meaning of unfamiliar words. For instance, a student may not know the meaning of the word “dislike,” but if they know that the prefix “dis-” means “not” or “opposite,” they can deduce that “dislike” means “not like.” Understanding affixes can also help students with reading comprehension by allowing them to break down complex words into their component parts and determine their meanings.