The term "set in ways" means to be stubborn or inflexible in one's behavior, opinions, or beliefs. The antonyms of this term are adaptable, flexible, and open-minded. People who are adaptable are open to change and are willing to adjust their ways according to the situation. Flexibility means being able to change and adapt to new circumstances as they arise. Open-minded individuals are receptive to new ideas and are willing to consider other perspectives. Being stuck in one's ways can hinder personal growth and prevent individuals from acquiring new skills and knowledge. Therefore, it is essential to strive to be adaptable, flexible, and open-minded in all aspects of life.