The word "more lassitudinous" refers to a state of feeling sluggish or lacking energy. Antonyms for this word include energetic, dynamic, lively, frisky, and lively. These words describe the opposite of lassitude, and can help to provide a more positive and active perspective. Being energetic and dynamic can help to increase productivity and motivation, while living a frisky and lively life can lead to greater joy and fulfillment. So, the next time you're feeling more lassitudinous, try engaging in activities that will help you feel more energetic, dynamic, lively, and frisky.