Longman Dictionary of Contemporary English
Wiktionary
n. A pleasant disposition or mood.
WordNet
n. a cheerful and agreeable mood [syn: good humor, good temper, amiability] [ant: ill humor]
Usage examples of "good humour".
She seemed to find his charm and good humour infectious, but it didn't infect me any: I'd done a good solid hour of constructive thinking before I'd gone to sleep that afternoon and the thinking had led me to inevitable conclusions that I found very frightening indeed.
I present Happy Hannah, four hundred and eighty-seven pounds of good humour and chuckles -- she would burst in, 'Yes friends, and I'm the living proof of how fat a person can get and still bear it gladly in the Lord's name.
It contained none of the artificial good humour or calculation she might have expected from a ruler.
When the maid had left, Terisa tried to recover her good humour by eating a big breakfast.