B1 US also spook a person who secretly collects and reports information about the activities of another country or organization
spy verb (FIND SECRETS)
C1 [ I ] to secretly collect and report information about the activities of another country or organization:
spy out informal
› to get knowledge secretly, especially of a place:
I generally like to spy out restaurants before I go to eat in them.
spy verb (SEE)
词库：同义词和关联词
