Without adequate preparation
He was taken aback momentarily, but he recovered swiftly.
Taken aback by his anger, she watched him run a hand through his hair in an unusual sign of agitation.
Frederick appeared to be taken aback both by the story, and the speed at which Sarah relayed it.
You will be taken aback by the many different varieties of birds there are to choose from as a pet.
"Wow," she said, taken aback. "I've never heard you speak bad about anyone. You have a thing for her?"