Her humor always lightens the mood during meetings.
A mood or state of mind.
He was in a good humor after receiving the good news.
A fluid or juice of an animal or plant, especially one of the four fluids (blood, phlegm, yellow bile, and black bile) formerly believed to determine a person's physical and mental qualities by their relative proportions.
In medieval medicine, an imbalance of the humors was thought to cause illness.
humorverb
To comply with the wishes or ideas of someone in order to keep them content, even if you do not agree with them.
She decided to humor her friend by attending the event, even though she wasn't interested.