Someone said “you’re coming back strong” can I reply with “most definitely”? What does it mean?

Yes, you can definitely reply with "most definitely." This response conveys strong affirmation and enthusiasm. When someone says "you're coming back strong," they likely mean that you are showing resilience or making a positive comeback after a setback. By responding with "most definitely," you are agreeing and expressing confidence in your situation. It shows that you recognize the progress you've made and are optimistic about moving forward.