Boredom: a lack of external stimuli recognized by the human brain as some (positive or negative) sensation, at a time when the body is still fit.

Boredom is largely an invention of civilization, modern
technology and globalization

Boredom: "too much" relaxation, more than our body needs. (With exception of some people who even find sleep boring and unproductive -- supposedly, Leonardo da Vinci was one of them..and my lit lect Fahy too...

Boredom: unwelcome "restlessness", not simply being tired.

Boredom is what i'm experiencing now.