turnkey
C1-C2Professional, Technical, Formal
Definition
Meaning
A jailer or prison warden.
A product, service, or system that is supplied, installed, and fully operational, ready for immediate use without further work from the customer. (As an adjective: complete, ready to operate).
Linguistics
Semantic Notes
Has undergone a significant semantic shift from a specific profession (jailer) to a major modern business/technical term. Both meanings exist but are largely distinct in modern usage, with the 'ready-to-use' meaning being far more common in business contexts.
Dialectal Variation
British vs American Usage
Differences
The 'ready-to-use' sense is dominant and nearly identical in both varieties. The historical 'jailer' sense is now archaic/rare in both, but might be slightly more recognised in British historical or literary contexts.
Connotations
In business/tech, strongly connotes convenience, completeness, and zero hassle. The old 'jailer' sense carries connotations of confinement and control.
Frequency
The business/tech sense is moderately common in professional contexts. The word is infrequent in general everyday conversation.
Vocabulary
Collocations
Grammar
Valency Patterns
[Adj.] turnkey solution/project/system[N.] provide/supply/offer a turnkey [solution]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None specific to the modern sense. Historical: 'turnkey' as a jailer appears in older literature.”
Usage
Context Usage
Business
Common. Refers to a service where the provider handles everything and delivers a fully functional result, e.g., 'We offer turnkey office fit-outs.'
Academic
Rare, except in business or engineering management papers discussing project delivery models.
Everyday
Very rare. Unlikely to be used outside of specific professional discussions.
Technical
Common in IT, construction, engineering, and manufacturing to describe pre-assembled, ready-to-operate systems.
Examples
By Part of Speech
verb
American English
- (Rare and non-standard) The vendor aims to turnkey the entire data centre deployment.
adjective
British English
- The contractor proposed a turnkey solution for the new laboratory.
American English
- We are looking for a turnkey software package for our accounting needs.
Examples
By CEFR Level
- The company specialises in building turnkey factories for the automotive industry.
- Negotiating a turnkey contract requires careful scrutiny of the scope-of-work clauses to avoid costly change orders later.
Learning
Memory Aids
Mnemonic
Imagine a new house where the builder hands you the single, final KEY. You TURN the KEY, and everything inside is ready to use. That's a TURNKEY solution.
Conceptual Metaphor
READINESS IS A KEY TO OPERATION (The key that starts the operation is handed over, implying everything else is already done).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do NOT translate as 'ключевой поворот' (key turn) which is nonsensical.
- The jailer sense (тюремщик) is archaic and misleading in most contexts.
- The modern sense is best translated as 'под ключ' (as in 'строительство под ключ').
Common Mistakes
- Using it as a verb (e.g., 'We will turnkey the project' is non-standard; use 'deliver a turnkey project').
- Confusing it with 'keystone'.
- Assuming it only relates to physical keys or locking mechanisms.
Practice
Quiz
In which industry is the term 'turnkey' LEAST likely to be used in its modern sense?
FAQ
Frequently Asked Questions
No. While it originated there, it's now used for any product or service delivered fully operational, including software, IT systems, manufacturing plants, and event management.
Yes, it is professional and formal. It is standard jargon in business proposals, contracts, and technical specifications.
This is highly non-standard and generally avoided in formal writing. The standard usage is as an adjective (a turnkey solution) or a noun (the project was delivered as a turnkey).
It likely derives from the construction industry. A builder would complete a house and literally hand over the key to the owner, who could then simply 'turn the key' to enter a finished home.