Pin down means to discover or state something exactly, or to make someone give a definite answer. To use pin down in a sentence, put the object after the verb or between its parts: “Detectives pinned down the time of the call.” The verb is transitive, so it always needs a thing or person to pin down.
Pin down at a glance
- Pin down is a transitive phrasal verb; its forms are pins down, pinned down and pinning down.
- It is separable, so the object may follow the verb or sit between pin and down.
- It has three senses: identify exactly, force a definite answer, and hold physically.
- The particle cannot be dropped, because pin alone means something different.
- The commonest error is placing a pronoun after the particle, as in pin down it.
What does pin down mean?
Pin down is a phrasal verb meaning to identify something exactly, to force someone to be specific, or to hold a person or animal so they cannot move. The Cambridge entry for pin down records all three senses, and the first two share the idea of fixing something that was vague or loose. When the goal is only to state something clearly rather than to extract it, specify is the plainer choice.
| Sense | Plain meaning | Example sentence |
|---|---|---|
| Identify exactly | Discover or state something precisely | Investigators pinned down the cause of the fire. |
| Force a definite answer | Make someone commit to a fact | The reporter pinned the minister down on the figure. |
| Hold physically | Keep a person or animal from moving | Two stewards pinned the intruder down. |
One limitation is worth stating plainly. Pin down is not a synonym for guess or estimate: it means the answer becomes definite, so a sentence about a rough figure needs a different verb. The physical sense is also much narrower than the other two and usually appears only when a person or animal is genuinely held.
How do you use pin down in a sentence?
Pin down is separable and transitive, so the object can follow the whole verb or slot between its two parts. With a pronoun, the object must go in the middle: pin it down, never pin down it. The table shows the patterns and where the particle may move.
| Pattern | Example | What it signals |
|---|---|---|
| pin down + object | The team pinned down the fault. | The object follows the full verb. |
| pin + object + down | The team pinned the fault down. | The separable form, equally correct. |
| pin + pronoun + down | Pin it down before you write. | A pronoun must sit between the verb and the particle. |
| be pinned down | The cause was pinned down within hours. | Passive voice keeps the focus on the answer. |
| pin + person + down + on + topic | She pinned him down on the date. | Forces a definite answer about one point. |
Writers who want a single-word verb often choose determine, which is more formal, while pin down keeps the energy of a search that has finally produced a firm answer.
Pin down in a sentence: examples across contexts
Pin down keeps its meaning and shifts register from a classroom to a newsroom. The ten sentences below each show something vague becoming definite, and one shows the shared particle in a different verb entirely.
| Context | Example sentence | Why this works |
|---|---|---|
| Classroom | We pinned down the rule after two more examples. | A small, familiar discovery shows the identify sense. |
| Workplace email | Please pin down the delivery date before we confirm. | Uses the force-a-definite-answer sense in a request. |
| News report | Officials pinned down the source of the leak by Friday. | The formal register suits an investigation. |
| Science writing | Researchers pinned down the exact age of the rock sample. | Shows a precise measurement being established. |
| Police reporting | Detectives pinned down the time of the call to the minute. | The identify sense with a fine degree of precision. |
| Business writing | The team pinned the supplier down on the final cost. | Uses the separable form with a person and a topic. |
| Academic prose | The study pins down the conditions under which the effect appears. | Applies the verb to a formal claim. |
| Sports report | The coach would not pin the blame down to one player. | The negative form shows a refusal to be specific. |
| Conversation | I cannot pin it down, but I have seen that face before. | The pronoun sits between verb and particle, as required. |
| Comparison | The manager refused to back down after the review. | Same particle, but back down means to withdraw a demand. |
The last row is the useful warning: down appears in many phrasal verbs, and each one carries its own meaning. Pin down is about making something definite, while back down is about giving way.
Pin down vs pinpoint
Pin down and pinpoint both point to precision, but they are built differently and used for different objects. pinpoint is a single, inseparable verb that usually locates one exact spot or moment.
| Attribute | pin down | pinpoint |
|---|---|---|
| Meaning | Determine, force an answer, or hold | Locate or identify exactly |
| Focus | A process, a cause or a person’s vagueness | A single place, moment or source |
| Separable | Yes: pin the cause down | No: pinpoint is one word |
| Typical object | A cause, a date, a figure, a person | A location, a moment, a source |
| Register | Neutral and common in speech | Slightly more technical |
Verdict: choose pin down when you must make something definite or press someone for an answer, and pinpoint when you simply name the exact place or moment where something happened.
Word forms and grammar of pin down
Pin down inflects on the verb pin, while the particle down stays fixed. The table also lists the word order that learners get wrong.
| Form | Part of speech | Example |
|---|---|---|
| pin down | phrasal verb, base form | We need to pin the date down. |
| pins down | third person singular | The report pins down the main cause. |
| pinned down | past and past participle | They pinned down the fault in an hour. |
| pinning down | present participle | She is pinning down the final figures. |
| pin it down | correct pronoun order | Try to pin it down today. |
| pin down it | non-standard word order | Write pin it down, never pin down it. |
Common mistakes with pin down
- Incorrect:
We should pin down it before Friday.Correct: We should pin it down before Friday. Rule: A pronoun object must sit between pin and down. - Incorrect:
The cause was pinned within hours.Correct: The cause was pinned down within hours. Rule: Dropping the particle changes the verb and loses the meaning. - Incorrect:
She pinned down.Correct: She pinned down the date. Rule: Pin down is transitive, so the object cannot be left out. - Incorrect:
They pinned down on the price.Correct: They pinned the seller down on the price. Rule: A person is pinned down on a topic, so the object comes first. - Incorrect:
The report pinpoints down the fault.Correct: The report nails the fault or pinpoints it. Rule: Pinpoint already means to locate exactly, so it takes no particle.
Practice using pin down
Work through the six items, then read the reason beside each answer rather than only the key.
- Fill the gap: Detectives finally ______ the time of the break-in.
- Choose the better word: The survey (pinned down / pinpointed) the exact street where sales fell.
- Correct the error: Try to pin down it before the meeting.
- Build a sentence: use pin someone down on about a shopkeeper and a delivery date.
- Spot the register: which belongs in a science report — the team pinned down the cause, or the team figured out the cause?
- Rewrite with the pronoun: Pin down the answer today. Use it instead of the answer.
Answers
- pinned down — the object follows the full phrasal verb, in the past tense.
- pinpointed — a single exact street suits the one-word verb pinpoint.
- Try to pin it down before the meeting — a pronoun goes between pin and down.
- Model answer: We pinned the shopkeeper down on the delivery date.
- The team pinned down the cause — a report keeps the precise verb and avoids figured out.
- Pin it down today — the pronoun must sit between the two parts.
The bottom line
Use pin down in a sentence when something vague becomes exact or when someone is pressed for a definite answer. Two nuances decide most sentences: the verb is separable but a pronoun must sit between its parts, and the particle cannot be dropped, because pin alone means to fasten. When you simply name an exact place or moment, identify or pinpoint is the sharper choice.
Frequently asked questions about pin down
Is pin down a separable phrasal verb?
Yes. Pin down is separable, so the object may follow the whole verb or sit between pin and down: detectives pinned down the time, or detectives pinned the time down. Both are correct. The one fixed rule is that a pronoun object must go in the middle, giving pin it down rather than pin down it.
What is the difference between pin down and pinpoint?
Pin down is a two-word phrasal verb meaning to make something definite or to press someone for an answer, and it is separable. Pinpoint is a single verb meaning to locate one exact place, moment or source, and it cannot be split. A detective might pin down a time and then pinpoint the exact room.
Does pin down have more than one meaning?
It has three. The first is to identify something exactly, as in pinning down a cause. The second is to force a person to be specific, as in pinning a minister down on a figure. The third is literal: to hold someone or something down so they cannot move. Context makes the sense clear.
Can I drop the word down from pin down?
No. Pin alone means to fasten something with a pin, so dropping down changes the meaning completely. The sentence the team pinned the fault means the fault was attached with a pin, not identified. The particle is essential to the meaning, even though it can move to the other side of the object.
When it comes to clear and precise communication, being able to “pin down” your message is essential. Pinning down a concept or idea means to clearly define it in a way that leaves no room for confusion or misunderstanding. This phrase is often used in discussions or debates to ensure that everyone is on the same page.
Mastering the skill of pinning down your thoughts not only helps in expressing yourself effectively but also enhances your ability to convey complex ideas in a simple and concise manner. Whether you are writing an essay, giving a presentation, or engaging in a dialogue, being able to pin down your main points can make a significant difference in how your message is received.
7 Examples Of Pin Down Used In a Sentence For Kids
- The butterfly can fly everywhere, but we cannot pin down it.
- Do you think you can pin down the running squirrel?
- Let’s try to pin down the moving shadow on the wall.
- It is not easy to pin down the fast-moving fish in the water.
- Can you help me pin down the colorful kite in the sky?
- The wind can blow the leaves away, but we can still pin down some.
- We should be gentle when we try to pin down the buzzing bee.
14 Sentences with Pin Down Examples
- Pin down the main points from the textbook to review before the exam.
- Don’t worry, I’ll help you pin down the details for your project presentation.
- Let’s pin down a date and time for our group study session.
- It’s important to pin down the deadline for submitting our assignments.
- Can you please help me pin down the location of the library on campus?
- We need to pin down the specifics of our group project before the deadline.
- I’m trying to pin down a suitable topic for my research paper.
- Let’s work together to pin down the key concepts from today’s lecture.
- We can pin down a good study routine to help us prepare for exams.
- The professor’s explanation helped me pin down the concept I was struggling with.
- I need to pin down the list of materials required for the experiment.
- Pin down the important dates and events in the academic calendar.
- Let’s pin down a study schedule to ensure we cover all the topics before the test.
- Don’t worry, I’ll help you pin down the best sources for your literature review.
How To Use Pin Down in Sentences?
Pin Down is a phrasal verb that means to determine or identify something with precision or accuracy.
When using Pin Down in a sentence, remember to place the main verb after the pronoun or noun subject. For example, you could say, “I tried to pin down the exact location of the meeting.” In this sentence, the main verb “tried” follows the subject “I,” and Pin Down is used to indicate the action of determining the exact location.
It is essential to remember that Pin Down is a separable phrasal verb. This means that the object can come between the two parts of the verb, as in the sentence, “The detective was able to pin the suspect down during questioning.” In this example, the object “the suspect” is placed between “pin” and “down.”
To improve your understanding and usage of Pin Down in sentences, try incorporating it into daily conversations or writing exercises. This will help you become more familiar with the correct context in which to use the phrasal verb. Practice using Pin Down in various sentences to gain confidence and fluency in your communication.
Conclusion
In summary, the phrase “pin down” is commonly used in various contexts to describe the act of determining something accurately or decisively. From pinpointing a location to locating the source of a problem, this expression signifies the precise and specific nature of the action being discussed. Whether it’s about identifying a culprit in a crime investigation or defining an elusive concept in a scientific study, the phrase “pin down” encapsulates the idea of narrowing down information or details to a definitive point.
Overall, the versatility of “pin down” in everyday language demonstrates its usefulness in conveying the notion of conclusively determining or fixing something. By encapsulating the concept of precision and certainty, this phrase contributes to clear communication and effective problem-solving in various situations where accuracy and specificity are paramount.
