observer
US /əbˈzɜ:rvə(r)/
・UK /əbˈzɜ:və(r)/
B1
noun
- A person who watches or notices something.
- Someone whose job it is to watch or notice things
- A person who studies the stars and planets.
- A person who is skilled at noticing and understanding things.
- Name of a newspaper.
- A person who watches or notices something.
- Someone who watches an event without getting involved.