Tagalong is a casual term that refers to someone who follows along with a group or a person. There are several synonyms for tagalong that can be used interchangeably depending on the context and the tone of the conversation. Some common synonyms for tagalong include hanger-on, follower, shadow, companion, sidekick, entourage, and second fiddle. These words carry a similar connotation to tagalong and are often used to describe individuals who attach themselves to someone or a group for various reasons. While tagalong is a lighthearted word, the use of synonyms can add depth and nuance to one's communication.