a comic or amusing quality

the humour of his predicament

the faculty of expressing or appreciating the comic or amusing

has no sense of humour

things that are intended to be comic or amusing; wit

formal or literary temperament

of cheerful humour

a state of mind; temper

was in no humour to listen

archaic an inclination; a whim

You'll ask me why I rather choose to have a weight of carrion flesh than to receive three thousand ducats. I'll not answer that, but say it is my humour — Shakespeare

dated or archaic a liquid or secretion in an animal or plant body, esp any of the four fluids, that is, bile or choler, black bile or melancholy, blood, and phlegm, regarded in medieval physiology as entering into the constitution of the body and determining by their relative proportions a person's health and temperament

right as the humour of malencolie causeth ful many a man in sleepe to cry — Chaucer