When you come across a situation that is difficult to comprehend or understand, the word "bogglingly" is often used to describe such a feeling. However, there are several other synonyms that can also fit in quite well. Some of these synonyms include "astonishingly", "stunningly", "mind-blowingly", "incredibly", "unbelievably" and "amazingly". Each of these words describes an experience or situation that is highly unexpected and often too incredible to believe. Whether you are trying to express shock or disbelief, these synonyms for "bogglingly" will undoubtedly help you to communicate your feelings with precision and accuracy.