The following video shows how to add existing negative keyword lists to a campaign in Adwords.
These lists will generally work for all campaigns but could create conflict depending on your objectives of the campaign.
They are general negative keywords around things we don't offer, destinations, pricing etc.
https://drive.google.com/file/d/1f7vMzw0SCnZfETaT64sAQNFUFn1iOXid/view