Bolt from the blue is a phrase used to describe an unexpected event that takes people by surprise. However, there are several other synonyms for this phrase, such as a shocker, a bombshell, or a curveball. All these words depict sudden and unexpected events that leave people dazed and confused. Another popular synonym for a bolt from the blue is a thunderbolt, which stands for a sudden and intense shock. These words are commonly used in news reports, speeches, and daily conversations to describe shocking events that disturb people's peace of mind. In a nutshell, a bolt from the blue is just one of many ways to describe surprising events that catch people off guard.