Indifferent is a word that is often used to describe a lack of interest or concern for something or someone. However, there are many synonyms for this term that can be used to convey different levels of disinterest or neutrality. Some common synonyms for indifferent include apathetic, unconcerned, dispassionate, uninterested, neutral, detachment, and aloof. These words can be used in varying degrees to describe different levels of indifference, from a simple lack of enthusiasm to a complete emotional detachment. Ultimately, the synonym that is chosen will depend on the context and the intent of the speaker, as well as the intended audience.