bon ‧ ho ‧ mie /ˈbɒnəmi $ ˌbɑːnəˈmiː/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Language: French ; Origin: bonhomme 'pleasant man' , from bon 'good' + homme 'man' ]
formal a friendly feeling among a group of people:
They were relaxed and full of bonhomie.