Strengthless means lacking in strength, energy, or power. If we talk about antonyms for the word "more strengthless," we need to look for words that convey the opposite meaning, such as strong, powerful, energetic, or vigorous. These words can be used to describe someone who is full of vitality, robust, or thriving. A few examples of antonyms for strengthless could be robust, healthy, sturdy, powerful, strong, energetic, vigorous, or dynamic. These words describe someone who is full of energy and vitality and has the power to face life's challenges. To sum up, antonyms for the word "more strengthless" include words that convey strength, power, and energy, and are the opposite of weakness and tiredness.