The word "gawker" generally refers to a person who stares curiously or impolitely at someone or something. However, there are several other synonyms available that can be used to express the same idea. Some alternative words for "gawker" are observer, spectator, onlooker, witness, watcher, gazer, and rubbernecker. Each of these terms has its own distinct connotation and may be used in different contexts. For instance, "spectator" and "onlooker" can be used to describe someone who is watching an event or performance, while "rubbernecker" is usually used to describe someone who looks at an accident or disaster.