adverb

aback

uh-BAK/əˈbæk/

Into a state of surprise or shock.

The springing toy takes the man aback.

A man recoils in startled surprise as a jack-in-the-box springs open on the table directly in front of him.
Etymology

Originally “on the back” or “backward,” aback described sails suddenly pressed against their masts by a wind change, stopping a ship. Being “taken aback” transferred that unexpected check to a person’s surprise or shock.

In context

Libranima132:32
there were others with a variety of costumes and faces. All this, unexpectedly encountered, took Don Quixote somewhat aback, and struck terror into the heart of Sancho
Don Quixote - Cervantes (Illustrated Audiobook) Part 3 of 4

More examples

  • He was taken aback by the sudden applause.
  • The price took us aback.
  • She seemed taken aback when I remembered her name.

Forms

aback

Similar words

startled
Startled names the surprised state; aback is usually used in the phrase taken aback.
astonished
Astonished suggests strong surprise; taken aback can also imply being momentarily disconcerted.