Being devoted means being committed or dedicated to something or someone. Antonyms for this phrase can include unfaithful, disloyal, indifferent, neglectful, and uncommitted. Unfaithful means being unreliable, whereas disloyal means showing a lack of loyalty. Indifferent means being apathetic or unconcerned, and neglectful describes someone who fails to give proper care or attention. Uncommitted simply means lacking commitment or dedication. Using antonyms, we can say that a person who is unfaithful is the opposite of someone who is devoted, which shows just how important it is to possess a sense of devotion towards something we find valuable.