Massacres are horrific events involving the killing of a large number of people. In order to describe such events, it is important to have a range of synonyms at hand. Some of the synonyms for massacres include slaughters, bloodbaths, carnage, butchery, annihilation, extermination, and decimation. These words are often used interchangeably, but each one carries a slightly different connotation. For example, the word "slaughter" may suggest a more brutal and violent act, while the word "decimation" refers to the killing of a specific number or percentage of a group. No matter which synonym is used, all of these words paint a grim picture of human tragedy and suffering.