The term "ex terminator" is a play on the phrase "terminator" which implies someone or something that terminates or puts an end to something. There are numerous words that can be used as synonyms for the term "ex terminator". Some of these include "end stopper," "finisher," "concluder," and "terminus." Other synonyms for this phrase include "exterminator," "eradicator," "annihilator," and "obliterator." These words all have the same core meaning, which is the idea of putting an end to something. Additionally, some of these synonyms can be used in a more figurative or abstract context, while others are used to refer to physical destruction.