noun
- a person who watches or notices something
- a person who attends a meeting or event to watch but not participate
- a person who follows or obeys a rule, custom, or religious practice
Usage: formal
Examples
- The bird observer spotted a rare species in the park.
- She was a keen observer of human behavior.
- UN observers monitored the election process.
- He attended the meeting as an observer, not a voting member.
- The scientist was a careful observer of the experiment.
- She is a strict observer of religious traditions.
- Casual observers might miss the subtle differences.