A rip tide, also known as a rip current, is a powerful current that can pull swimmers away from shore. There are several other synonyms for rip-tide, including undertow, seaward pull, and offshore current. These currents can be dangerous and pull swimmers out to sea, making it difficult for them to swim back to shore. It is important to be aware of the signs of a rip-tide and to know how to swim out of it in order to stay safe while enjoying the beach. It is recommended to always swim near a lifeguard and only swim in designated swimming areas.