Never negatives allow you to inform the Negative Keyword Nightly Hunt to prevent adding a search term as a negative *even* if it meets the requirements of your NKW nightly hunt rule.
You might wonder: can you add them in bulk?
- Bulk definition 1: Adding many never-negatives at once to the same location. No, you cannot do this.
- Bulk definition 2: Adding one never-negative to many locations at once. Yes, you can do this.
To add 1 Never Negative to many ad groups at once, leave the 'campaign and ad group' selection blank when creating a never negative, as shown below.