"Set at" is a common phrase that refers to arranging or positioning an object or a person at a certain spot. The phrase can be replaced by several synonyms such as locate, place, position, establish, fix, or plant. While "set at" works well in most situations, using a synonym can add more variety and flavor to the language we use. For instance, instead of saying "The table was set at the center of the room," you could say "The table was positioned in the middle of the room." Therefore, using synonyms for "set at" can help to diversify your writing and allow you to convey meaning more effectively.