The term "have the blahs" is an informal way of saying that someone is feeling unenthusiastic, disinterested, and lacking energy for anything they do. The antonyms for this phrase could be feeling energized, enthusiastic, motivated, or inspired. When someone is full of positivity, it is possible to say that they are bubbling with energy, vitality, and vibrancy. Other antonyms of the phrase include animated, dynamic, moving, brisk, active, and dynamic. When one is feeling lively, inspired, and passionate about something, they are less likely to be weighed down by feelings of disinterest and will instead be more focused and productive.