mistake-spotter

noun
UK /mɪˈsteɪk spɒtə/
US /mɪˈsteɪk spɑːtər/

A mistake-spotter is someone who finds the wrong things in work.

Our teacher is a good mistake-spotter and always finds the errors in our spelling tests.


OTHER MEANINGS

2. A person whose job is to look for faults in a process or product.

The factory hired a mistake-spotter to check every toy before it was packed.

3. A tool or feature in software that points out typing errors.

The mistake-spotter in my writing app underlines words I spell wrong.

4. A game where players try to find the differences between two pictures.

We played mistake-spotter with two nearly identical drawings and found five differences.