Cozy/ˈkəʊzi/ Definition 1 of 5Pro Tip 1/2Physical Settings Use 'cozy' for small but pleasant spaces, suggesting warmth and comfort. The cabin is cozy in winter, with its roaring fireplace. Pro Tip 2/2Emotional Impact 'Cozy' also conveys a sense of safety and relaxation in a space. I felt cozy wrapped in the blanket, away from the storm.