The phrase "does in" is often used to describe someone or something that has been defeated or destroyed. There are several synonyms that can be used in place of "does in," such as "finished off," "brought down," "overpowered," "conquered," "crushed," "eliminated," "annihilated," "vanquished," "demolished," and "slaughtered." Each of these synonyms carries a slightly different connotation, but all share the common meaning of putting an end to something, whether it be a physical object or an abstract concept. The usage of synonyms can add nuance and depth to your language, making your writing more engaging and sophisticated.