Celebrate noisily, often indulging in drinking; engage in uproarious festivities.
1
To-night you may jollify; but after that you are under strict discipline, for a month at least.
2
Tain't natchul fer folks not to git together an' laugh an' be happy an' fergit dere quarrels an' dere troubles an' jollify deyselves.
3
You cannot imagine how a little praise jollifies us poor authors to the marrow of our bones.