Dictionary.com
Thesaurus.com
Synonyms

blind side

American  

noun

  1. the part of one's field of vision, as to the side and rear, where one is unable to see approaching objects.

  2. the side opposite that toward which a person is looking.


blind side British  

noun

  1. rugby the side of the field between the scrum and the nearer touchline

  2. the side on which a person's vision is obscured

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to take (someone) by surprise

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
blind side Idioms  
  1. see under blind spot.


Etymology

Origin of blind side

First recorded in 1600–10