Resumptive pronoun

A resumptive pronoun is a personal pronoun appearing in a relative clause, which restates the antecedent after a pause or interruption (such as an embedded clause, series of adjectives, or a wh-island).

Resumptive pronouns have been described as "ways of salvaging a sentence that a speaker has started without realizing that it is impossible or at least difficult to finish it grammatically". An English speaker might use a resumptive pronoun in order to prevent violations of syntactic constraints.