The expression “fly in the face of” means to directly oppose, contradict, or go against something, especially a rule, belief, fact, principle, expectation, or commonly accepted idea.
For example, “His decision flies in the face of common sense” means that his decision strongly contradicts what most people consider sensible.
Although the expression contains the word fly, it has nothing to do with insects or physically flying.
This idiom is common in newspapers, books, academic writing, formal discussions, and everyday English.
It is especially useful when you want to emphasize that something clearly conflicts with an established idea, evidence, rule, or expectation.
Learning the meaning of each word can make the expression much easier to remember and use correctly.
Quick Answer
“Fly in the face of” means to openly or strongly go against something, such as a rule, fact, belief, principle, or expectation. It is usually followed by a noun or noun phrase: “The decision flies in the face of the evidence.” The expression often emphasizes a clear or striking contradiction.
Why Do People Confuse “Fly in the Face Of”?
Learners often find this idiom confusing because its literal meaning does not explain its actual meaning.
If you hear “fly in the face of the evidence,” you should not imagine something flying toward someone’s face. Here, fly in the face of is an idiomatic expression meaning to conflict directly with or contradict something.
Another reason for confusion is the word “fly.” Many learners know fly as a verb meaning “to move through the air,” but English uses fly in several idiomatic expressions with completely different meanings.
For example:
- Time flies. = Time passes quickly.
- Fly off the handle. = Suddenly become very angry.
- Fly in the face of something. = Directly oppose or contradict something.
What Does “Fly” Mean in “Fly in the Face Of”?
The word “fly” is part of the fixed idiom. It does not have its ordinary literal meaning of moving through the air.
In this expression, fly contributes to the idea of moving or acting contrary to something. The important point for learners is to treat “fly in the face of” as one complete expression, rather than trying to translate each word separately.
Examples with “fly”
- The new policy flies in the face of previous agreements.
- His behavior flew in the face of everything we had discussed.
- Their findings fly in the face of the traditional theory.
Notice that fly changes tense:
- Present: flies in the face of
- Past: flew in the face of
- Present perfect: has/have flown in the face of
What Does “Face” Mean in “Fly in the Face Of”?
Here, “face” is used as part of the idiom. It refers figuratively to something that is confronted or opposed.
The expression is normally followed by “of” + noun or noun phrase:
- fly in the face of the evidence
- fly in the face of common sense
- fly in the face of tradition
- fly in the face of the law
- fly in the face of expectations
The word face should not be interpreted literally as a person’s physical face.
“Fly in the Face Of” vs. “Go Against”
| Expression | Meaning | Typical Use | Example |
|---|---|---|---|
| fly in the face of | Strongly contradict or oppose | Facts, evidence, principles, expectations | The claim flies in the face of the evidence. |
| go against | Oppose or conflict with | Rules, advice, preferences, decisions | This goes against company policy. |
| contradict | Say or show the opposite of something | Statements, evidence, claims | The results contradict his theory. |
| conflict with | Be incompatible with something | Rules, ideas, information | The report conflicts with earlier findings. |
“Fly in the face of” is particularly useful when you want to stress that the contradiction is obvious, significant, or surprising.
When Should You Use “Fly in the Face Of”?
Use “fly in the face of” when something strongly conflicts with another thing.
It works especially well with:
- evidence
- facts
- common sense
- logic
- expectations
- principles
- traditions
- rules
- laws
- established beliefs
- conventional wisdom
- previous agreements
For example:
The decision flies in the face of common sense.
This means the decision seems to contradict what would normally be considered sensible.
You can use the expression in both spoken and written English, but it often sounds more formal or emphatic than simply saying “go against.”
12 Examples of “Fly in the Face Of”
1. The decision flies in the face of common sense.
The decision strongly contradicts what seems sensible.
2. His actions flew in the face of company policy.
His actions directly went against the company’s policy.
3. This theory flies in the face of the available evidence.
The theory conflicts strongly with the evidence that exists.
4. The results fly in the face of earlier research.
The results contradict what earlier research suggested.
5. Her behavior flew in the face of everything her parents had taught her.
Her behavior was completely contrary to the principles her parents had taught her.
6. The proposal flies in the face of environmental regulations.
The proposal conflicts directly with environmental regulations.
7. Their decision flies in the face of public expectations.
Their decision is very different from what people expected.
8. Ignoring the warning would fly in the face of logic.
Ignoring the warning would be completely contrary to logical thinking.
9. The new evidence flies in the face of the original explanation.
The new evidence strongly contradicts the original explanation.
10. He continued with the plan despite advice that flew in the face of his assumptions.
The advice directly challenged what he had assumed.
11. Such a claim flies in the face of basic scientific principles.
The claim conflicts strongly with fundamental scientific principles.
12. The decision to cancel the project flew in the face of previous commitments.
The decision contradicted commitments that had already been made.
Common Mistakes with “Fly in the Face Of”
Mistake 1: Using “fly” literally
Incorrect understanding:
The bird flew in the face of the evidence.
This sounds like a literal bird flying into someone’s face unless the context clearly supports the idiom.
Better:
The argument flies in the face of the evidence.
Mistake 2: Forgetting “of”
The standard expression is:
fly in the face of something
Not:
fly in the face something
Correct:
The decision flies in the face of the evidence.
Mistake 3: Using the wrong verb form
The verb changes according to the subject and tense.
- The claim flies in the face of the evidence.
- The claim flew in the face of the evidence.
- The claim has flown in the face of the evidence.
Mistake 4: Assuming it always means “disagree”
The expression usually suggests something stronger than a simple difference of opinion. It often describes a direct or striking contradiction.
Mistake 5: Confusing it with “face the music”
These are completely different idioms.
- fly in the face of = strongly oppose or contradict something
- face the music = accept the unpleasant consequences of your actions
Memory Trick for “Fly in the Face Of”
Think of “fly in the face of” as “go directly against.”
Imagine an idea moving straight toward something instead of following it. That image can help you remember that the expression describes strong opposition or contradiction.
A simple formula is:
fly in the face of = strongly go against
For example:
The evidence flies in the face of his claim.
Think:
The evidence strongly goes against his claim.
American vs. British English
“Fly in the face of” is used in both American and British English. There is no major difference in its basic meaning or grammatical structure.
You may encounter it in formal writing, journalism, academic discussions, business communication, and everyday conversation in both varieties of English.
For example, both American and British speakers can say:
The decision flies in the face of common sense.
The main difference is not regional but stylistic. In casual conversation, speakers may often choose simpler alternatives such as “go against,” “conflict with,” or “contradict.”
Similar Words and Expressions
Several expressions have meanings close to “fly in the face of.”
Go against
To oppose or conflict with something.
That decision goes against our agreement.
Contradict
To say or show that something is not true or correct.
The new evidence contradicts his statement.
Conflict with
To be incompatible with something.
The new rule conflicts with existing regulations.
Run counter to
To be contrary to something. This is relatively formal.
The proposal runs counter to established practice.
Be at odds with
To be in disagreement or conflict with something.
His actions are at odds with his stated principles.
Defy
To openly resist or refuse to obey something.
The protesters defied the authorities’ orders.
These expressions overlap, but “fly in the face of” is particularly effective when emphasizing a strong contradiction with evidence, expectations, principles, or accepted ideas.
Final Verdict
“Fly in the face of” means to strongly contradict, oppose, or go against something. It is usually followed by “of” and a noun or noun phrase, such as the evidence, common sense, expectations, or the rules.
Remember that it is an idiom, so its meaning should be understood as a whole rather than interpreted literally. If you can replace it with “strongly go against” and the sentence still makes sense, you are probably using it correctly.
Frequently Asked Questions
1. What does “fly in the face of” mean?
It means to strongly oppose, contradict, or conflict with something.
The decision flies in the face of the evidence.
This means the decision strongly contradicts the evidence.
2. Is “fly in the face of” an idiom?
Yes. “Fly in the face of” is an English idiom whose figurative meaning is different from the literal meanings of fly and face.
3. What is another way to say “fly in the face of”?
Depending on the context, you can say “go against,” “contradict,” “conflict with,” “run counter to,” or “be at odds with.”
4. Can “fly in the face of” be used in formal writing?
Yes. It is common in formal and semi-formal English, particularly when discussing evidence, principles, rules, expectations, or established ideas.
5. What comes after “fly in the face of”?
A noun or noun phrase normally follows “of.”
Examples include:
- fly in the face of the facts
- fly in the face of common sense
- fly in the face of expectations
- fly in the face of the rules
6. What is the past tense of “fly in the face of”?
The past tense is “flew in the face of.”
The decision flew in the face of public expectations.
The past participle is “flown.”
The decision has flown in the face of public expectations.
7. Is “fly in the face of” negative?
It is often used in situations involving disagreement, contradiction, or opposition, so it frequently appears in negative or critical contexts. However, the expression itself simply describes a strong conflict with something.
8. What is the difference between “fly in the face of” and “go against”?
Both mean that something conflicts with something else. “Fly in the face of” is generally more emphatic and can highlight a striking contradiction, while “go against” is simpler and more general.
Remember This
Fly in the face of = strongly go against or contradict something.
Use this pattern:
Subject + fly/flew/has flown + in the face of + noun
Examples:
- The claim flies in the face of the evidence.
- His actions flew in the face of the rules.
- The findings have flown in the face of expectations.
The key word to remember is “of.” Say “fly in the face of something,” not simply “fly in the face something.”
Conclusion
The idiom “fly in the face of” is a useful way to say that something strongly contradicts or opposes an established fact, belief, rule, principle, or expectation. Although its literal words can be confusing, its figurative meaning is straightforward: to go strongly against something.
Once you recognize the common pattern—fly in the face of + noun—you can use the expression naturally in both formal and everyday English. When you need a simpler alternative, “go against” usually works, while “fly in the face of” adds stronger emphasis to the contradiction.
