a double-edged sword(redirected from a two-edged sword)
Something that can be both beneficial and problematic. Intelligence is a double-edged sword. Things may come easy to you, but people will always expect more. This meeting is a double-edged sword—it's a great chance to get the firm wider exposure, but we're just not prepared enough for it.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
a double-edged swordor
a two-edged sword
COMMON If something is a double-edged sword or a two-edged sword, it has both an advantage and a disadvantage. The strong yen is a double-edged sword for Japan. It increases the spending power of consumers, but it also raises the costs of exports for manufacturers. Fame is a two-edged sword bringing as many problems as it does privileges.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
a double-edged sword (or weapon)a course of action or situation having both positive and negative effects.
2000 Investor A rising pound is a double-edged sword when investing overseas.
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