Which type of context clue can assist with understanding unfamiliar words?

Definition clues are a powerful type of context clue that can aid in understanding unfamiliar words. When an unfamiliar word is presented in a sentence, a definition clue often follows or occurs nearby, providing an explicit explanation or meaning of that word. This can help clarify the word's meaning directly, making it easier for the reader to grasp its significance within the context of the passage.

For example, if a text uses the term "loquacious" and then states that it means "talkative," the definition clue immediately defines the unfamiliar term. This technique allows readers to not only comprehend the unfamiliar word but also to retain the new vocabulary more effectively due to the direct relation provided in the text.

The other types of context clues serve informative purposes as well but do not provide the same clear and direct explanation of a word's meaning as definition clues do. Synonyms offer similar meanings, illustrative clues use visuals or metaphors, and examples provide instances of the word in use. However, the straightforward nature of a definition clue is particularly effective for direct comprehension.