rap ‧ port /ræˈpɔː $ -ɔːr/ BrE AmE noun [singular, uncountable]
[ Date: 1600-1700 ; Language: French ; Origin: rapporter 'to carry back, report' ]
friendly agreement and understanding between people ⇨ relationship
rapport with/between
He had an excellent rapport with his patients.
establish/build up/develop (a) rapport
He built up a good rapport with the children.