Assessment of Teaching Assistant Skills (ATAS) 095 Practice Test

A suffix is an ending affix added to a word to change its meaning or grammatical function. For example, adding -ed to talk makes talked, indicating a past tense action, or adding -ness to happy forms happiness, turning an adjective into a noun. That ending piece sits at the end of the word, which is exactly what the description describes. In contrast, a prefix goes at the front, an infix is inserted inside the word, and a circumfix surrounds the word with pieces on both sides, so those options don’t fit the idea of something attached at the end.