What are the opposite words for enthusiastic?

The antonyms for the word "enthusiastic" are numerous and varied, ranging from subtle to overt. Some of the most commonly used antonyms include indifferent, apathetic, uninterested, uninvolved, lethargic, dispassionate, and blase. These words all indicate a lack of enthusiasm or passion for something, and may be used to describe people, events, or feelings. Other antonyms for enthusiastic might include bored, unenthusiastic, unexcited, jaded, or even depressed. Whatever the antonym, it describes an absence of the positive qualities of enthusiasm, and often suggests a less than desirable state of mind or being.