Antonyms for the phrase "most unfitted" could be qualified, capable, suitable, competent, or prepared. These terms describe a person who is fit for a task, job, or role. Being qualified means having the necessary skills, knowledge, or experience to perform a task successfully. Someone who is capable can effectively handle a difficult situation or problem. A suitable person is an appropriate fit for a specific task or role. A competent individual has the skills and abilities to perform a job with ease. And finally, a prepared person is ready and equipped to face challenges along the way. So, to be antonyms of "most unfitted," these characteristics would need to be present.