Tell me the synonyms of 'flabbergasted'.
Some synonyms for the word 'flabbergasted' are astonished, amazed, stunned, astounded, shocked, thunderstruck, dumbfounded, speechless, taken aback, dazed, bewildered, overwhelmed, and stupefied.
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Tell me the synonyms of 'flabbergasted'.

### Response:
Some synonyms for the word 'flabbergasted' are astonished, amazed, stunned, astounded, shocked, thunderstruck, dumbfounded, speechless, taken aback, dazed, bewildered, overwhelmed, and stupefied.