1. 空虚
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.
2. 空寂;空旷
The emptiness of a place is the fact that there is nothing in it.
3. 空旷之处；空地
An emptiness is a very large area of land, sea, or space that has nothing in it.
1. the quality of being valueless or futile
e.g. he rejected the vanities of the world
Synonym: vanity
2. an empty area or space
e.g. the huge desert voids
the emptiness of outer space
without their support he'll be ruling in a vacuum
3. having an empty stomach
4. the state of containing nothing