Vacant means something is empty or has no person or thing in it. We use it to talk about places like seats or rooms that are free.
The chair is vacant in the room.
There is a vacant seat on the bus.
Vacant means a job or role that no one is doing yet. It is free for someone new to start it.
The company has a vacant manager job.
There are many vacant posts at work.
Vacant can describe a face or look that shows no feeling or thought. It means the person looks like they are not thinking.
She looked at me with a vacant face.
His eyes were vacant all day long.
Vacant means a place or building has no people inside. It can be empty and not used for a long time.
The house has been vacant for years.
There are many vacant buildings here.
Vacant can mean the mind is empty or not active. It is used to describe when someone is not thinking clearly or paying attention.
He had a vacant mind after working for hours.
Her thoughts were vacant during the lecture.