Convivial

Relations between the heads of state in this region have been convivial, even brotherly.

Tom interrupted the convivial atmosphere to tell everyone that crab-like aliens were invading.

It was a convivial group that enjoyed being together.

I put the chief of police behind the bar, instructed him in his duties, and we four convivial spirits sprawled along the counter drinking ale and telling yarns till cockcrow.