cozy in WordNet English dictionary

1. a padded cloth covering to keep a teapot warm
   cosy  tea cosy  cozy  tea cozy 
   

1. enjoying or affording comforting warmth and shelter especially in a small space
   "a cozy nook near the fire"; "snug in bed"; "a snug little apartment"
   cozy  cosy  snug 
   
2. suggesting connivance
   "a cozy arrangement with the police"
   cozy 
   
3. having or fostering a warm or friendly and informal atmosphere
   "had a cozy chat"; "a relaxed informal manner"; "an intimate cocktail lounge"; "the small room was cozy and intimate"
   cozy  intimate  informal