What is to lead (one) to do suddenly and without forethought; to bring (one) into some unexpected state; -- with into; as, to be surprised into an indiscretion; to be surprised into generosity called?

surprise — To lead (one) to do suddenly and without forethought; to bring (one) into some unexpected state; -- with into; as, to be surprised into an indiscretion; to be surprised into generosity. (Webster's 1913.)

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