to strike a blow
- idiom
- The Wulfgar Command has just struck a blow against British colonialism.
Examples
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Within the past year, the 4th U.S. Circuit Court of Appeals struck a blow for states' rights, whacked the monumental Miranda ruling at the knees, and took a piece out of the Violence Against Women Act, saying the commerce clause didn't stretch that far.
Academic text (1999) -
We struck a blow for sisterhood.
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Somebody had to strike a blow for freedom.
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Well, you and I will strike a blow for liberty.
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But I would surely rather strike a blow than either flee or remain quiet, waiting to be struck.
Fiction book (1992) -
The defendant thought he was striking a blow to the American economy.
Blog text (19) -
Second, in some small way, I may have been able to strike a blow against misunderstandings that flow in the other direction.
Academic text (2007) -
First, I learned a great deal, and I am therefore in a better position to strike a blow against the misunderstandings about Iran that are all too prevalent in the United States today.
Academic text (2007) -
Activists are working hard to strike a blow against climate change through awareness campaigns.
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The new policy aims to strike a blow at poverty by providing more resources for low-income families.
Synonyms
To criticize someone or something strongly in public
Antonyms
How Damaging
Surface Forms
Morphology
The sense 'to have a significant effect' is directly derivable from 'strike' (to hit or attack) + 'blow' (a strong hit), with the determiner 'a' not changing meaning; learners can easily map this to a metaphorical 'hit' against an idea or system. This hit-as-impact metaphor is common across languages and uses straightforward composition, so a B1 learner who knows the constituents would likely infer the MWE meaning.
Etymology
Strike a blow comes from the simple image of hitting something: to strike is to hit and a blow is the hit itself. So the phrase now means 'to do something that hurts or weakens' an idea, group, or system.