Reinstate refers to the process of restoring something or someone to a previous position or status. Antonyms for the word "reinstate" could include terms like demote, dismiss, fire, remove, or expel. Demote refers to lowering someone's position or rank whereas dismiss means to remove someone from a job or position. Fire means to terminate someone's employment, while remove refers to taking someone or something away from a particular place or position. Lastly, expel means to force someone out of a place or an organization. These antonyms have the opposite meaning of reinstating, and each accentuates a negative connotation that can be used in various situations.