"Acts as though" is a phrase that can be replaced by several synonyms, depending on the context of the sentence. Some synonymous phrases for "acts as though" include "pretends," "feigns," "mimics," and "simulates." Other possible synonyms include "assumes," "adopts," "puts on," "emulates," and "imitates." These phrases all indicate a form of behavior that is not genuine or authentic, but rather, is put on for a specific purpose or outcome. When used appropriately, these synonyms can help to add variety and depth to written or spoken language, allowing for more precise communication of ideas and intentions.