spook
🇺🇸
/spuːk/
🇬🇧
/spuːk/
A spirit or ghost.
I think this old house has a spook because things move on their own.
Someone who works as a secret agent.
The spy novel was about a spook who went undercover.
To scare someone or something, or to get scared.
Our cat spooked when it saw the vacuum cleaner for the first time.