The word "up-roars" connotes a chaotic and noisy disturbance. Its antonyms, on the other hand, represent a sense of peace, quietness, and stillness. Words such as calm, tranquility, peace, and serenity stand as the complete opposite of up-roars. They indicate a state of restfulness and relaxation. Additionally, words such as silence, serenity, and quietness represent a sense of subdued activity, an absence of noise and commotion. These antonyms also imply a sense of order, organization, and harmony. Therefore, while up-roars embody disorder, antonyms like calm, tranquility, and serenity imply a sense of order and inner calm.