What is the term for words that express the opposite of another?

The term for words that express the opposite of another is "antonyms." Antonyms are pairs of words that have contrasting meanings, such as "hot" and "cold" or "happy" and "sad." This concept is fundamental in understanding vocabulary and enhancing language skills, as knowing antonyms helps in grasping nuances in meaning and improving comprehension.

In contrast, definitions provide explanations of the meanings of words, while synonyms are words that have similar meanings and can often be used interchangeably in sentences. Analogies, on the other hand, show relationships between words or concepts but do not specifically focus on oppositional relationships. Understanding the role of antonyms in language helps learners articulate ideas more clearly and understand text better.