Translation guide
A copilot is a second pilot who assists the main pilot in operating an aircraft or other vehicle. In Japanese, this role is expressed with specific terms depending on the context, primarily in aviation.
The second pilot in an aircraft who assists the captain.
A person who assists or supports another in a secondary role, not necessarily in aviation.
There is no direct figurative equivalent for 'copilot' in Japanese. Instead, describe the role using words like 助手 (assistant) or サポート役 (support role).
Do not directly translate 'copilot' as コパイロット in non-aviation contexts. It may sound unnatural or overly literal. Use 助手 or a descriptive phrase instead.
He is my copilot. (unnatural unless in aviation)
Standard term for a copilot in aviation. Used in formal and technical contexts.
He was on the plane as a copilot.
Loanword from English, commonly used in casual or general contexts, but less formal than 副操縦士.
The copilot supports the captain.
He helped me with the project as my assistant.
She is the support person for the team.