Which of the following is NOT a type of context clue?

Affixes, which are prefixes or suffixes added to a root word to modify its meaning, do not serve as context clues in the same way that other options do. Context clues are hints found within a sentence or passage that help readers understand unknown words. Examples provide specific instances, definitions offer clear explanations, and opposites give contrasting meanings to elucidate the unknown term. Affixes, however, are grammatical elements rather than contextual hints, making them distinct from the other types of context clues. All the other options—examples, definitions, and opposites—directly help the reader infer the meaning of a word based on surrounding information.