What term describes someone who is strong and energetic in body or mind?

The term "vigorous" signifies someone who exhibits strength and energy, both physically and mentally. It encompasses a sense of robustness and vitality, suggesting that the individual possesses an active and enthusiastic nature. This can be demonstrated through various attributes such as stamina, determination, and a zest for life, all of which contribute to their overall vigor. This definition aligns perfectly with the context of being strong and energetic.

In contrast, the other terms imply the opposite or a lack of energy. For example, "weak" indicates a deficiency in physical or mental strength, "passive" denotes a lack of action or energy, and "lethargic" refers to an extreme level of sluggishness or fatigue. Therefore, "vigorous" stands out as the ideal term that embodies strength and energy.