co-conspirator
UK[ˌkəʊkənˈspɪrətə]US[ˌkoʊkənˈspɪrətər]
n
A person who joins with another or others in planning and carrying out a secret, illegal, or harmful act, especially a conspiracy.
Morpheme Breakdown
co
con
spirator
co
together
con
with
spirator
plotter
Etymology
The word 'co-conspirator' is a compound formed within English by adding the intensifying prefix 'co-' to the existing noun 'conspirator'. Its core, 'conspirator', originates from Latin 'conspiratus', the past participle of 'conspirare', meaning "to agree, unite, plot." This Latin verb itself is a combination of 'con-' (with, together) and 'spirare' (to breathe), evoking the image of individuals breathing together in unison, a powerful metaphor for secret agreement. Over centuries, the sense evolved from literal harmony to a clandestine plot against authority. The addition of the English prefix 'co-' reinforces the collaborative nature, making a 'co-conspirator' explicitly one who plots together with others.
Analysis
Structure: co (together) + con (with) + spirator (plotter)
co-: A prefix of Latin origin (from 'com-'), meaning "together, jointly, in common." It functions as an intensifier of the following element.
con-: A prefix of Latin origin (from 'cum'), meaning "with, together." It is an assimilated form of 'com-' used before certain consonants.
spirator: From the Latin verb 'spirare' meaning "to breathe," but in this context derived from 'conspirare' (to plot), thus meaning "one who plots." It functions as the agent noun suffix '-ator' attached to the verb stem.
Examples
The prosecutor argued that the defendant was a willing co-conspirator in the fraud scheme.
One of the co-conspirators decided to testify for the state in exchange for immunity.
The novel's plot revolves around a king and his co-conspirator planning a coup.