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a double-edged sword

ə ˈdʌbəl edʒd sɔːrd

General
neutral
advanced
Literally:
A sword with blades on both sides

What does "a double-edged sword" mean?

Something that has both positive and negative consequences

Examples

  • Social media is a double-edged sword: it connects people but also spreads misinformation.
  • His bluntness was a double-edged sword — admired by some but offensive to others.
  • Artificial intelligence is proving to be a double-edged sword for the creative industries.

Origin

References to double-edged swords appear in the Bible and ancient literature.

How to use it

Very widely used in essays, journalism, and formal discussion.

Similar expressions

mixed blessing
two-sided coin
catch-22

Opposites

pure advantage
unmitigated good

Related idioms

  • actions speak louder than words

    What people do is more important than what they say

  • better safe than sorry

    It's better to be careful and prevent problems than to take risks

  • so far so good

    Things have gone well up to now

  • easier said than done

    Something is more difficult to do than to talk about

  • make a long story short

    To summarize or get to the point

  • to make matters worse

    In addition to existing problems

Use it in a practice answer

Try "a double-edged sword" in a CELPIP-style Speaking or Writing task. The AI feedback tells you whether your word choice worked.

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