Humour as feelings of amusement in people

Humorism: ancient Greek theories of humour in physiology, psychology and medicine.

The obsolete Four Temperaments theory of more modern psychology derived from the above.

Humours in Ayurveda, a similar theory in a form of indigenous Indian medicine.

Aqueous humour, watery fluid in the eye.

A closely related (but somewhat antiquated) definition refers to any positive emotion or feeling

Humor Monastery, a monastery in the Suceava county in Romania