Convivial/kənˈvɪviəl/ Definition 1 of 3Pro Tip 1/2Positive Mood Use 'convivial' when you want to express a light-hearted, positive mood among people. Our family reunions are always so convivial! Pro Tip 2/2Informal Settings It's often used for gatherings or occasions that are informal and friendly. The neighborhood BBQ was a convivial event.