double-edged
US /ˌdʌb.əlˈedʒd/
UK /ˌdʌb.əlˈedʒd/
1.
having two sharp edges
:
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He wielded a double-edged sword in battle.
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The knife had a double-edged blade, making it versatile.
2.
having both favorable and unfavorable consequences
:
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Fame can be a double-edged sword; it brings opportunities but also loss of privacy.
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The new policy is a double-edged solution, helping some but harming others.