Anonymous

self-surprising, self-frightening

Anonymous

It means he entertains his delusions so often that the number of times he entertains them alarms him.

Anonymous

frequency - the number of instances of something; the number of times that something happens during a period of time https://www.macmillandictionary.com/dict... alarming - at a frightening or worrying rate https://www.macmillandictionary.com/dict...

Anonymous

The frequency of an event is the number of times it happens during a particular period. https://www.collinsdictionary.com/dictio... alarming means too often

Anonymous

way too often

Anonymous

so often that it's alrming, or startling.