noun
inspector
in-SPEK-ter/ɪnˈspektər/
A person who officially checks that something meets required standards.
The inspector examines the crate of apples carefully.

Etymology
An inspector is someone who looks into things. Early English used the word for an overseer or superintendent, linking observation with responsibility for official examination.
In context
Now, I'm also waiting for the building inspector to turn up any day now and let me know whether or not I have to tear down this shed that I built over the boat.
More examples
- An inspector checked the building.
- Several inspectors visited the factory.
- She showed the records to the inspector.
Forms
inspector · inspectors
inspection noun — An official or careful examination.
Similar words
- examiner
- Someone who checks or tests something.
- auditor
- Someone who examines records or procedures for compliance or accuracy.