to attack or capture sb / sth unexpectedly or without warning; to happen unexpectedly so that sb is slightly shocked; to surprise sb
Oxford80% of films
to attack or capture sb / sth unexpectedly or without warning
We'll take them by surprise.
...take them by surprise, the way they took us.
Oxford20% of films
to happen unexpectedly so that sb is slightly shocked; to surprise sb
Definitions from the Oxford Advanced Learner's Dictionary, 9th edition