When it comes to relaxed manners, there are a variety of synonyms that can be used to describe this type of behavior. Some common synonyms include easygoing, laid-back, calm, serene, and peaceful. Other synonyms include nonchalant, carefree, mellow, untroubled, and composed. All of these words convey a sense of ease, comfort, and tranquility in one's behavior. Whether it's a casual conversation, a social gathering, or a business meeting, having relaxed manners can make a big difference in how others perceive and respond to you. So, if you want to project an approachable, friendly, and confident image, consider using some of these synonyms to describe your relaxed manners.