A feeling of emptiness is an unhappy or frightening feeling that nothing is worthwhile, especially when you are very tired or have just experienced something upsetting. 空虚
noun [抽象名词]空虚;空,无;空地;不真诚
The result later in life may be feelings of emptiness and depression. 结果是往后的生活可能会感到空虚和沮丧。
-ness 表名词,“性质,状态,”通常加在形容词后面emptiness n. 空洞(empty 空的)