Cosily
/ˈkəʊzɪli/
Definition 1 of 1
Pro Tip 1/3Warm Atmosphere
Used to describe scenarios with a pleasant, friendly, and comfortable ambience, often intimate. 
The candlelit dinner was set up cosily, creating a perfect romantic atmosphere.
Pro Tip 2/3Physical Comfort
Often implies a physical state of being warm and relaxed, especially in a small, snug place. 
She wrapped the blanket around herself and settled cosily on the couch.
Pro Tip 3/3Social Setting
Suggests a sociable and easygoing situation with close friends or family. 
After dinner, we chatted cosily in the living room for hours.