As late as August 1864, on the visit to Halifax of some Canadian delegates, he had been convivially eloquent in favour of union.
"Have a peach," he said convivially, laying an enormous Late Crawford on the corner of the desk.
1660s, "pertaining to a feast," from Late Latin convivialis, from Latin convivium "a feast," from convivere "to carouse together," from com- "together" (see com-) + vivere "to live" (see vital). Meaning "sociable" is from 18c. Related: Conviviality.