Mrs. Van Daan's grizzling is absolutely unbearable; now she can't any longer drive us crazy over the invasion, she nags us the whole day long about the bad weather. It really would be nice to dump her in a bucket of cold water and put her up in the loft.
Naggers always know what they are doing. They weigh up the risks, then they go on and on and on until they get what they want or until they get punched.
Nagging is the repetition of unpalatable truths.