By surprise: He was taken aback by her caustic remarks. (adverb)
Nautical In such a way that the wind pushes against the forward side of a sail or sails.(adverb)
Archaic Back; backward.(adverb)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "aback" in a sentence
"As I read your stories and especially your friends who so generously comment I am taken aback (is aback a word?) by the generous sharing of wisdom you receive from your friends at French-Word-A-Day."
"Hillary grew up in this culture, so yes she was taken "aback" by these comments; you, others, and obama being so shallow minded and dismissive of someones culture and values is ignorant. obama will never be President."
"The richness and elegance of the church took me all "aback;" it was so entirely different from anything I had seen, that it was difficult to decide whether I was most charmed by its novelty or its beauty."