Adjective
The word is derived from jolly
You cannot endow even the best machine with initiative; the jolliest steamroller will not plant flowers. Walter Lippmann
You should see me dance the Polka, You should see me cover the ground, You should see my coat-tails flying, As I jump my partner round; When the band commences playing, My feet begin to go, For a rollicking romping Polka Is the jolliest fun I know. George Grossmith