When it comes to finding synonyms for the word "zinger," there are a few options to consider. One alternative could be the term "one-liner," which also refers to a quick, sharp comment or remark. Another synonym could be "joke," which implies a humorous comment that is meant to elicit laughter from its audience. "Quip" is another potential synonym, which is a witty or clever retort that is designed to be humorous or playful. Other options might include "witticism," "wisecrack," or "gag," depending on the context of the original "zinger" and its intended tone or effect.