"Fan out" is a phrasal verb that means to spread out in different directions or to scatter. The antonyms of "fan out" are "gather," "converge," "collect," "cluster," or "condense." These words indicate a movement towards a common point or a clustering together of items or people. For instance, if a group of students fanned out to collect data, they would disperse to different locations to gather information. Conversely, if the same students converged, they would meet at a single location to share their data. Knowing the antonyms of "fan out" can help you better communicate your intended message and convey a clearer picture of the situation.