rapport
n. C / Un. a friendly relationship where people understand each other's ideas and feelings well. When you have this, you find it easy to talk and work together.
n. a close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas and communicate well.
The teacher has a great rapport with her students.
Building a strong rapport with clients is essential for long-term success in any sales-driven industry.
The negotiator spent hours establishing a genuine rapport with the opposing party before attempting to discuss the more contentious points of the treaty.
Borrowed from French rapport.
Often used with the verbs 'build', 'establish', or 'develop'; typically takes the preposition 'with'.
They have a good rapport between them.They have a good rapport with each other.While 'between' is used for the relationship itself, 'rapport' is most naturally paired with 'with' to describe the connection to another person.