The document discusses how context clues can help readers understand unfamiliar words. It defines context as the ideas surrounding a word or situation. Readers can look at context clues like definitions, examples, and related words to infer the meaning of an unknown word. The document provides examples of using context clues to determine the meanings of words like "profusely", "elaborate", and "prehensile". It emphasizes that context clues are important for understanding vocabulary on tests.