Mississippi Foundations of Reading Practice Test – Exam Prep & Study Guide

A bound form of a morpheme indicates meaning changes within a word because these morphemes cannot stand alone and must be attached to a free morpheme to convey significance. For instance, the prefix "un-" modifies the meaning of a root word by signaling negation, as in "happy" becoming "unhappy." Similarly, suffixes like "-ness" alter the meaning of base words to reflect a state or quality, as in "happy" transforming into "happiness." Such modifications enrich the vocabulary and express nuanced ideas, showing how bound morphemes serve a critical role in expanding and changing the meanings of words in a language. The focus on meaning changes highlights the importance of morphemes in understanding and building vocabulary effectively.