The document discusses different types of context clues that can help readers determine the meaning of unfamiliar words. It identifies four main types of context clues: synonyms, antonyms, explanations, and examples. Readers can use other words or phrases in the same sentence or nearby sentences that are similar or opposite in meaning to the unfamiliar word to infer its definition based on context. The document provides multiple examples for each type of context clue to illustrate how authors provide hints about word meanings.