The phrase "hadst a care" means to be concerned or worried about something. Antonyms for this phrase include being carefree, calm, relaxed, unconcerned, or indifferent. When you don't have a care, you can enjoy life without stress or worry, and embrace each moment with peace and serenity. It's important to find balance between caring and worrying too much, and learning to let go of unnecessary stress can greatly improve your well-being. So next time you're feeling overwhelmed or anxious, remind yourself to step back, take a deep breath, and embrace the antonyms of "hadst a care".