devil is in the details
Meaning
Small, overlooked details can cause serious problems or determine success, so careful attention is needed.
Origin
Often linked to the saying “God is in the details,” attributed to architect Mies van der Rohe; the “devil” variant stresses how minor specifics can hide difficulties and derail plans.
Notes
A cautionary phrase implying hidden complications in small points. Common in business, design, contracts, and planning; neutral to slightly wary tone, informal to semi-formal.
Examples
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The contract looked fine at first, but the devil is in the details, so we’re having a lawyer review it.
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Our design seems simple, yet the devil is in the details when it comes to wiring and safety checks.
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We agreed on the budget quickly, but the devil is in the details of the monthly fees and penalties.
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The project plan is solid overall; the devil is in the details of who owns each task and when it’s due.
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He promised the trip would be cheap, but the devil is in the details—taxes and baggage charges added up.
Grammar & Usage Notes
Usually appears as “the devil is in the details” (with “the”). Can be used as a standalone sentence or clause. “Details” is typically plural; wording is fairly fixed.
Synonyms
- the devil is in the detail
- details matter
- it’s the little things
- the trick is in the details
Antonyms
- the big picture matters
- don’t sweat the small stuff