Origin: Germanic Old English suffix
Sadness has 4 different meanings across 1 category:
emotions experienced when not in a state of well-being
"The rain outside deepened her sadness, leaving her feeling heavy and unwell throughout the afternoon."
the quality of excessive mournfulness and uncheerfulness
"Her constant weeping and refusal to leave her room created an atmosphere of such heavy sadness that no guest could bear to stay long."
The state or emotion of being sad.
"A deep sadness settled over her as she watched the old house being demolished."