The phrase "was wired" typically means that someone was alert, energetic, or excited. As for antonyms, there are several options to consider. "Was lethargic" might be one good option, indicating that someone was sluggish, tired, or unmotivated. "Was calm" is another possible antonym, suggesting that someone was peaceful, relaxed, or mellow. "Was bored" could also work, as it implies a lack of interest or enthusiasm. Overall, the choice of antonym will depend on the context in which "was wired" is used, as well as the specific meaning and tone that the writer or speaker wants to convey.