Re-instituted means to restore or establish something again. Its antonyms include abolish, eradicate, eliminate, discontinue, and terminate. When an organization or system is re-instituted, it denotes that it has been revitalized after a lapse or a break. Its opposite, abolish, means to remove or abolish something completely. Specific to political systems, the antonyms of re-instituted can include overthrowing, deposing, or removing a leader or government. Conversely, if someone is re-instituted to a position or responsibility, their antonym would be fired, dismissed or terminated. Overall, the antonyms of re-instituted illustrate the opposite of revitalizing or bringing back something from the past.