Showing who suffers the negative effect
Use on for the person or organisation harmed by the unexpected result.
Backfire most naturally takes on to show who is negatively affected. Other prepositions are uncommon or belong to separate sentence structures.
Use backfire on when an action has the opposite effect and harms someone. Backfire with can appear when describing a method or audience, but it is less fixed. Backfire in, as, and at are generally not standard combinations.
These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.
Use on for the person or organisation harmed by the unexpected result.
With can be used when discussing how a tactic failed with a particular group.
The same subject can take different constructions because each sentence answers a different question.
Some combinations appear in real text but do not mean what learners often assume.
Backfire does not normally take at directly.
✕ The prank backfired at him. ✓ The prank backfired on him.On identifies who suffers; with refers to a reacting group.
✓ The slogan backfired with teenagers.In usually introduces a situation or stage, not a standard backfire combination.
✓ The decision backfired in practice.Choose the expression that matches the intended meaning.
Paste the complete sentence below. Linguix checks the preposition together with grammar, spelling, punctuation, and style.
Yes. It is the standard way to show who was harmed by the failed action.
Yes. You can simply say a plan backfired.
It is accepted in contexts about audience reaction, though less central than backfire on.
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