Agent
Agent noun - Something used to achieve an end.
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Synonyms for Agent
Private detective and agent are semantically related. In some cases you can use "Private detective" instead a noun "Agent".
Private detective
Private detective noun - A person not on the police force who investigates criminal or illicit activity or searches for missing persons.
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Synonyms for Private detective
Agent and private detective are semantically related. Sometimes you can use "Agent" instead a noun phrase "Private detective".
Both terms in one sentence
- Private Detective (former FBI agent) Mark Lane seems to pretty much vanish off the face of the Earth by the book Final Justice.
Source: Literature / Sisterhood Series - Private Detective: Escott is one, but he prefers "private agent." Jack is basically one, but in truth he's more like Escott's assistant, if incredibly valuable and experienced.
Source: Literature / The Vampire Files - Rachel Morgan of The Hollows novels isn't technically a assassin but a runner, a combination bounty hunter, private detective and law enforcement agent.
Source: Contract on the Hitman
Cite this Source
Private detective and Agent. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/agent/private_detective
Agent & Private detective. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/agent/private_detective>.
Private detective or Agent. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/agent/private_detective.
Google Ngram Viewer shows how "agent" and "private detective" have occurred on timeline