verb (used with object), blind·sid·ed, blind·sid·ing.

Sports. to tackle, hit, or attack (an opponent) from the blind side: The quarterback was blindsided and had the ball knocked out of his hand.
Informal. to attack critically where a person is vulnerable, uninformed, etc.: The president was blindsided by the press on the latest tax bill.

Origin of blindside

First recorded in 1970–75; v. use of noun phrase blind side Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for blind-sided

bushwhack, sucker-punch

Examples from the Web for blind-sided

Contemporary Examples of blind-sided

  • When a suicide occurs, family members and loved ones are often blind-sided.

    The Daily Beast logo
    A Sister's Tragic Loss

    Jane Ciabattari

    March 4, 2011

  • The excuse that Netanyahu was blind-sided by settler gremlins in the Interior ministry strains credulity.

    The Daily Beast logo
    Why Bibi Humiliated Biden

    Martin Indyk

    March 11, 2010