When someone makes a "fatuous claim," they are making a claim that is silly, nonsensical, or lacking any basis in fact. When calling out this type of argument, it can be helpful to use different synonyms to help drive the point home. Some possible alternatives to "fatuous claim" include "baseless assertion," "ridiculous statement," "absurd contention," "preposterous argument," "idiotic notion," or "laughable hypothesis." By using different ways of describing unsupported claims, we can help to emphasize just how unconvincing and unsupported these ideas truly are. Ultimately, by identifying and rejecting these types of arguments, we can work towards building a more rational and evidence-based society.