attack or hit on or from the side where the attacked person's view is obstructed catch unawares, especially with harmful consequences; "The economic downturn blindsided many investors
A term given to any rotation where the snowboarder has oriented themselves "blind" to their takeoff or landing and must stretch to look over their shoulder Such a technique usually increases the difficulty (e g A backside alley oop air in the halfpipe is often harder than a frontside alley oop air because it is blindside)