Having the blahs often refers to feeling dull, uninspired, or unenthusiastic. Antonyms for this phrase might include feeling energized, inspired, optimistic, or enthusiastic. Feeling upbeat, motivated, lively, or invigorated could also be considered antonyms to having the blahs. Other antonyms might include feeling passionate, driven, ambitious, or even adventurous. Ultimately, the opposite of having the blahs is having a sense of purpose or excitement, and feeling engaged and connected to the world around us. By seeking out activities or experiences that ignite our passion or curiosity, we can avoid getting stuck in a state of lethargy or boredom.