"Caught unaware" is a phrase that refers to being taken by surprise or caught off guard. There are several synonyms for this phrase that can be used interchangeably to describe a sudden shock or unexpected turn of events. Some common synonyms for "caught unaware" include "caught off-guard," "taken aback," "surprised," "startled," "thunderstruck," and "flabbergasted." Other words that can be used to describe a similar feeling include "shocked," "dumbfounded," "bewildered," and "stunned." Regardless of which synonym is used, they all convey the same idea of being caught by surprise and unsure of how to react.