double-edged sword

/ˌdʌbəl ˈɛdʒd sɔrd/
noun phrase★Intermediate💡 something with both positive and negative effects◆idiom
◆ What It Really Means
A situation, decision, or tool that simultaneously provides benefits and causes harm or problems, often in a way that the drawbacks are an inherent part of the advantages.
Literal Meaning
A sword with two cutting edges, which can cause injury from either side.
Literal Breakdown
doublehaving two parts or aspects+edgedhaving an edge or border+sworda bladed weapon
◇ Mental Image
A sword that can cut on either side, symbolizing that any action taken will have consequences that can harm as well as help. The dual edges represent the inseparable nature of the pros and cons.
◈ When to Use
A manager introduces a flexible work-from-home policy (benefit: employee satisfaction) but notices a decline in team collaboration (drawback). Colleagues might say, 'The new policy is a double-edged sword—it keeps morale high but hurts communication.'
◉ Cultural Note
The phrase originates from the literal description of swords but evolved metaphorically in English during the 16th–17th centuries. It reflects a pragmatic view of life where few things are purely good or bad, and benefits often come with hidden costs.
neutral

something that has both favorable and unfavorable consequences

The new policy is a double-edged sword for small businesses: it reduces costs but increases paperwork.

The policy helps small businesses save money but also requires more administrative work.

Traveling abroad is a double-edged sword—it broadens your perspective but can also be expensive.

Traveling abroad offers valuable experiences but may strain your budget.

💡

Often used to describe situations, tools, or decisions with mixed outcomes.

Collocations

be a double-edged swordto have both good and bad aspectsthe double-edged sword ofused to introduce a situation with dual outcomes

Related Phrases

silver liningmetaphor
a hopeful or comforting aspect in a difficult situation
Pyrrhic victoryidiom
a victory that comes at a great cost
trade-offnoun
a balance achieved between two desirable but incompatible features

💡Pro Tip

When to use

Use 'double-edged sword' when describing something that has significant benefits but also serious drawbacks. It implies that the advantages and disadvantages are closely linked or inseparable.

⚡Gold Rule

Avoid overuse

Do not use this idiom for minor inconveniences or purely positive/negative situations. Reserve it for significant dual outcomes.

📖Word Origin

First recorded in the 16th century, referring to a sword with two cutting edges. The metaphorical use to describe something with dual outcomes emerged later.

📝Usage Notes

Common in discussions about technology, policies, relationships, and life choices. Avoid using it to describe purely positive or negative situations.

Word Breakdown

double-edged
having two sharp edges
adjective
+
sword
a weapon with a long metal blade
noun
English Dictionary