Sidewinders are a type of venomous snake that is commonly found in North America. However, if you are looking for synonyms for the word "sidewinders," here are a few: serpents, reptiles, cobras, asps, vipers, adders, or rattlesnakes. These synonyms are often used to describe different species of poisonous and non-poisonous snakes. Some of these synonyms are based on their physical characteristics, such as the rattlesnake's distinctive rattle, while others are based on their geographical location, such as the asp's prevalence in ancient Egypt. Ultimately, the word you choose to describe a snake depends on the context and the species being discussed.