Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “spy”

spy

noun [C] uk   /spaɪ/ us  

spy

verb uk   /spaɪ/ us  

spy verb (FIND SECRETS)

C1 [I] to secretly collect and report information about the activities of another country or organization: He was arrested for spying on missile sites. 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)

[T] old-fashioned or humorous to see or notice someone or something usually when it involves looking hard: I think I've just spied Andrew in the crowd.
Phrasal verbs
(Definition of spy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of spy?
Add Cambridge dictionaries to your browser to your website

Definitions of “spy” in other dictionaries

Word of the Day

dawn on sb

If a fact dawns on you, you understand it after a period of not understanding it.

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More