What does coagent mean?
Coagent is a rare formal noun for a person who acts jointly with another, especially as an accomplice to wrongdoing. The word’s force lies in “co-”: it identifies someone who participated alongside another rather than acted alone, and legal usage has commonly applied it to a participant in an illegal transaction or scheme. In broader, carefully chosen contexts, it can denote a person jointly engaged with another in an undertaking. That broader sense is uncommon in everyday English, where accomplice usually carries the clearest legal implication and colleague or partner may be used where no wrongdoing is involved. Coagent should therefore be reserved for contexts in which joint agency is relevant, such as legal writing or a formal description of a joint enterprise. Although the vocabulary is old and compact, the term is not widely understood, so plain-language writing will often benefit from more familiar wording.
nounA person who acts jointly with another, especially an accomplice to wrongdoing.
- A person who acts jointly with another, especially an accomplice to wrongdoing.
"The investigators identified the accountant as a coagent in the fraud."
"The investigators identified the accountant as a coagent in the fraud."
"The two coagents worked together to negotiate the agreement."
The standard plural is coagents, with no additional ending.
"The investigators identified two coagents in the scheme."
A coagent is an accomplice by another name: old legal vocabulary for someone who acted together with another.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of coagent
Coagent was formed in English from the prefix co-, meaning jointly or together, and the noun agent. Agent was borrowed through Old French from Latin agens, the present participle of agere, meaning “to do” or “act.” Words including agency and agendum ultimately share this Latin root.
Related word forms
How coagent is actually used
Rare and formal, chiefly legal. It is not a general substitute for colleague or collaborator, whose meanings do not necessarily imply acting together in a transaction or wrongdoing.