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aback

US //əˈbæk// UK //ɐbˈæk// aback
  1. 1 surprised or shocked (adv.)
    B2 Upper Intermediate

    surprised or shocked by something unexpected.

    startled or disconcerted by a sudden development; almost exclusively used in the passive construction 'to be taken aback'.

    Example

    I was taken aback by how much the city had changed since my last visit.

    Example

    The CEO was visibly taken aback by the shareholders' blunt refusal to approve the proposed merger during the annual meeting.

    Teacher's tip

    Learners should treat 'taken aback' as a single lexical unit rather than trying to use 'aback' on its own.

  2. 2 sails pressed backwards (adv.)
    C2 Proficiency Technical Science

    when the wind blows against the front of a ship's sails, pushing them back against the mast.

    the state of a ship's square sails when pressed against the mast by a headwind. Used as a predicative adverb.

    Example

    The ship was caught aback by a sudden change in the wind's direction.

    Example

    The vessel was laid aback to reduce its headway, allowing the crew to safely lower the lifeboats into the swelling sea.

    Teacher's tip

    This is the original nautical source of the common idiom; it is rarely encountered outside of maritime history or technical sailing manuals.

Etymology 1

From Middle English abak, from Old English onbæc, equivalent to a- (“towards”) + back. Compare West Frisian tebek (“aback”, adverb, literally “to/at back”), Swedish tillbaka (idem.).

Etymology 2

From Latin abacus.

Usage

Almost always follows the verb 'to be' and the past participle 'taken'.

Pitfall

The news took me aback.I was taken aback by the news.While 'take someone aback' is grammatically possible, the passive form 'be taken aback' is the standard idiomatic usage.

Idioms1 entry

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