"Inactivates" refers to the process of making something inactive or disabling its function. There are several synonyms for this word that can be used in different contexts. One synonym is "deactivates," which implies that the function or power of something has been turned off or disabled. Another synonym is "disables," which refers to something being made non-functional or incapacitated. "Neutralizes" is another synonym that refers to rendering something ineffective or nullified. Additionally, the term "quells" can be used as a synonym for inactivating, which specifically means to suppress or subdue something. These synonyms provide various options for expressing the idea of making something inactive.