- 1[intransitive] to collect secret information about another country, organization, or person He spied for his government for more than ten years.
- 2 [transitive] spy somebody/something (literary or formal) to suddenly see or notice someone or something In the distance we spied the Pacific for the first time. Phrasal Verbsspy on somebody/somethingspy somethingout
NAmE//spaɪ//Verb Forms present simple I / you / we / they spy
he / she / it spies
past simple spied
-ing form spying