"coziest" in the adjective sense
1. cozy, cosy, snug
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"
2. cozy, intimate, informal
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"
3. cozy
suggesting connivance
"a cozy arrangement with the police"
Source: WordNet® (An amazing lexical database of English)
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