Numbness is a loss of feeling in part of the body. Numbness in the fingers, sudden numbness, a spreading numbness.
Sudden numbness down one side is a stroke warning and needs emergency help. Ordinary numbness usually means a nerve is compressed, which is why a leg goes dead when you sit on it. The word also describes emotional deadness after a shock. Note the silent b.
1nounnumbnessA loss of feeling in part of the body.
“After the dentist's injection, she felt numbness in her lip for hours.”
2nounfeelingA state of feeling no emotion at all, often after a shock or a loss.
“After the funeral she felt nothing but a strange numbness.”
Too few real examples of this word to estimate which sense is commonest.
From numb + -ness.
Etymology from Wiktionary, CC BY-SA