In grammar, an antecedent is an expression (word, phrase, clause, sentence, etc.) that gives its meaning to a proform (pronoun, pro-verb, pro-adverb, etc.). A proform takes its meaning from its antecedent; e.g., "John arrived late because traffic held him up." The pronoun him refers to and takes its meaning from John, so John is the antecedent of him. Proforms usually follow their antecedents, but sometimes they precede them, in which case one is, technically, dealing with postcedents instead of antecedents. The prefix ante- means "before" or "in front of", and post- means "after" or "behind". The term antecedent stems from traditional grammar. The linguistic term that is closely related to antecedent and proform is anaphora. Theories of syntax explore the distinction between antecedents a