blindside
From Longman Dictionary of Contemporary Englishblindsideblind‧side /ˈblaɪndsaɪd/ verb [transitive] American English informal 1 HIT/BUMP INTOto hit the side of a vehicle with your vehicle in an accident Their car was blindsided by a bus at the intersection.2 SURPRISEDto give someone an unpleasant surprise I was blindsided by his suggestion.→ See Verb table