When someone says that someone or something is soulless, they mean that the person or thing is not alive. They may also mean that the person or thing is not emotional.
The movie was soulless and boring.
The conversation was soulless and uninteresting.
adjective
lacking sensitivity or the capacity for deep feeling
1
Soulless was moved but not the dab page.
2
A soulless coldhearted group of people.
3
Corporations are by legal definition soulless.
4
Animals were held to be soulless.
5
Except for the alive soulless little boy.
6
Its biography explains it to be soulless creature.
7
Another is the soullessness of retail as practiced by the nonelect.
8
For the dead are rising soulless, unstoppable and unspeakably hungry.
9
Clem and Lorne are both presumably soulless, but good.
10
Another soulless generic sports stadium, ho hum.