Calm/kɑːm/ Definition 1 of 3Pro Tip 1/3Emotional State When describing a person's emotional state, 'calm' indicates they are not anxious or upset. Even during the debate, her expression remained calm. Pro Tip 2/3Natural Scenes 'Calm' often describes serene natural environments, like water or weather. The calm lake reflected the mountains perfectly. Pro Tip 3/3Metaphorical Use Used metaphorically, 'calm' can represent a peaceful period in life or events. After a hectic week, the weekend brought a welcome calm.