Affixes are bound             , which means they cannot be used alone and must be attached to a root word.

Affixes are bound morphemes, which means they cannot be used alone and must be attached to a root word. They serve as prefixes, suffixes, infixes, or circumfixes that modify the meaning of the root they are attached to. For example, the prefix "un-" can be added to the root word "happy" to create "unhappy," changing the meaning from positive to negative. Similarly, the suffix "-ed" can be attached to the root word "walk" to form "walked," indicating a past tense. Understanding where and how to apply affixes is essential for enhancing vocabulary and grasping the subtleties of word meanings in the English language.