SUBSTITUTE Copy link • SUBSTITUTE 1. v. aliquem in locum alterius substituere: aliquid in locum or in vicem alicujus rei reponere. To substitute one word for another, aliud verbum reponere (Quint., 11, 2, 49). 2. s. vicarius (one who administers an office in the place of another, especially in the place of one who still retains his office, either in public or in private life): procurator (an agent, either in public or in private life, one who acts on behalf of another during his absence). To be or act as a substitute, aliena fungi vice (to be a vicarius); procurare (to be a procurator): alicujus vice or officio fungi (as vicarius); alicujus negotia or rationes procurare; alicui procurare (as procurator): to procure a substitute for anybody, alicui vicarium expedire (e.g., to serve as a soldier, Liv., 29, 1, 8); for one’s self, vicarium mercede conducere (e.g., to serve in the militia, etc.).