LET English Practice Exam 2026 – Complete Preparation Guide

The term that describes the smallest unit of meaning in language is "morpheme." Morphemes are the building blocks of words and can be either free or bound. A free morpheme can stand alone as a word with meaning, such as "book" or "run." In contrast, a bound morpheme cannot stand alone and is often a prefix or suffix, like "un-" in "unknown" or "-ed" in "coded." This distinction makes morphemes essential in understanding how words are formed and convey meaning within a language.

Syllables, although important for the rhythm and flow of speech, do not convey meaning on their own. Phonemes are the smallest individual sounds in a language, which do not hold meaning by themselves but combine to create morphemes and words. Lexemes refer to the abstract unit of meaning that includes all forms of a word (like "run," "runs," and "running"), but they are not the smallest units; rather, they contain multiple morphemes. Therefore, the designation of morpheme as the smallest unit of meaning highlights its foundational role in language structure.