Some possible synonyms for the term "quiet presence" could include words like calm, serene, tranquil, peaceful, placid, still, undisturbed, hushed, silent, subdued, restrained, subtle, unobtrusive, mild-mannered, or self-possessed. These words all convey a sense of someone or something being present in a way that is subtle, understated, and unassuming, without drawing undue attention to themselves. Whether it is a person who exudes a calm and reassuring energy or a place with a pervasive sense of peacefulness, a quiet presence can create a powerful sense of comfort and tranquility.