馴れ馴れしい / overly familiar
馴れ馴れしい (narenare-shii) describes behavior that is overly familiar or inappropriately casual. In customer service, it refers to interactions that feel too personal or informal, making customers uncomfortable. While friendly service is appreciated, professionalism is key in Japan, where politeness and respectful distance are valued. Striking the right balance between warmth and formality prevents service from feeling 馴れ馴れしい.
Curious to hear more about it? Want to learn how to pronounce it? Watch or listen to Episode 61 using the below link 👇