To cause (someone) to feel unusually alarmed or delighted by something unexpected.
It surprises me that I owe twice as much as I thought I did.
To do something to (a person) that they are not expecting, as a surprise.
He doesn’t know that I’m in the country – I thought I’d turn up at his house and surprise him.
To undergo or witness something unexpected.
He doesn’t surprise easily.
To cause surprise.
To attack unexpectedly.
To take unawares.
Caused to feel surprise, amazement or wonder, or showing an emotion due to an unexpected event.