double-edged sword
Meaning
Something that has both advantages and disadvantages; a benefit that also carries risks or negative consequences.
Origin
From the image of a sword sharpened on both sides: it can be powerful, but it can also injure the wielder or be hard to handle—hence something with both good and bad effects.
Notes
Neutral to cautionary. Emphasizes that a benefit comes with a downside and implies the need for careful handling. Common in speech and writing, including formal contexts.
Examples
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The new surveillance system is a double-edged sword: it improves security but erodes privacy.
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Social media can be a double-edged sword, keeping you connected while also burning you out.
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The flexibility of working from home is a double-edged sword—you save time, but the boundaries blur.
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Being honest is often a double-edged sword; it builds trust, yet it can reveal harsh truths.
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Low prices are a double-edged sword, attracting customers but squeezing profits.
Grammar & Usage Notes
Usually used with the article: “a double-edged sword.” Often followed by a colon/semicolon or “in that…” to contrast pros and cons. Hyphenated before nouns (“a double-edged-sword situation”).
Synonyms
- mixed blessing
- two-sided coin
- catch-22
- trade-off
Antonyms
- unalloyed good
- pure benefit
- one-sided advantage