Sadness

/ˈsædnəs/ noun

Sadness is the feeling of being unhappy, hurt, or low in spirit. It can be mild or deep and may come from loss, disappointment, or empathy for others.

Built from *sad* plus the noun-forming suffix *-ness*, which turns adjectives into states or qualities. It follows the same historical path as *sad*, from 'fullness' to emotional heaviness.

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