The antonyms for the word "unrest" are calm, peace, serenity, tranquility, stability, harmony, and contentment. Calmness refers to the absence of agitation and disturbance, while peace suggests a state of harmony and freedom from conflict. Serenity suggests a sense of peace and tranquility, often associated with natural surroundings. Tranquility represents a state of peace and quietness, while stability refers to a steady and consistent state. Harmony suggests a state of agreement and balance, while contentment suggests satisfaction and happiness. These antonyms are essential for a peaceful and balanced life, providing a sense of calm and stability amidst the often tumultuous nature of our daily lives.