secret agent

Noun

A member of an intelligence agency whose identity or affiliation is kept confidential.

Japanese Meaning

秘密工作員 / 諜報員

The secret agent slipped into the embassy under the cover of night to retrieve the classified documents.

秘密工作員は夜の闇に紛れて大使館に潜入し、機密文書を回収した。

Sense（1）

A member of an intelligence agency whose identity or affiliation is kept confidential.

secret agents

（ plural ）