The term 'cozy chat' can be summarized by two crossword solutions: CAUSERIE (8 letters) and tête-à-tête (9 letters). CAUSERIE is a French word meaning an informal conversation, usually between two people. Tête-à-tête is also a French phrase which translates to 'head-to-head' and is used to describe a private conversation between two people. Both terms are used to describe a cozy chat, or a private conversation between two people.