Switch knife is a term commonly used to describe a knife with a folding blade that can be opened with the press of a button or lever. However, there are several synonyms that can be used to describe this type of knife. One such synonym is "automatic knife," which is a term used to describe a knife that opens with the push of a button or switch. Another synonym is "flick knife," which is a term used to describe a knife with a blade that can be quickly and easily flicked open. Other synonyms include "spring-assisted knife," "push-button knife" and "assisted-opening knife." Regardless of the terminology used, it is important to use such knives responsibly and safely.