Torpidities refer to a state of physical or mental inactivity, lethargy, or sluggishness. The antonyms for this word would be lively, energetic, active, alert, vigorous, and dynamic. While torpidity denotes a lack of action or movement, its antonyms all suggest a state of high activity, readiness, or responsiveness. A person who is torpid may appear dull, lifeless, or disinterested, while someone who is lively, energetic, or dynamic is likely to be cheerful, enthusiastic, and engaged. In summary, the antonyms for torpidities are words that convey a sense of vitality, motion, or vitality.