Good-humour

Sotherton was a word to catch Mrs. Norris, and being just then in the happy leisure which followed securing the odd trick by Sir Thomas’s capital play and her own, against Dr. and Mrs. Grant’s great hands, she called out in high good-humour, “Sotherton! “Yes, that is a place indeed, and we had a charming day there.[…]”

Source: wiktionary

It is a fair, even-handed, noble adjustment of things, that while there is infection in disease and sorrow there is nothing in the world so irresistibly contagious as laughter and good-humour.

Source: wiktionary

We were almost always under fire from the enemy; but with the utmost cheerfulness, and even, I may say, good-humour, the whole of the infantry did all in their power to lighten the work of the overtasked artillerymen: comrades we were, all striving for the accomplishment of one purpose—that of bringing swift and sure destruction on the rebels who had for so long a period successfully resisted our arms.

Source: wiktionary