Drill Down in a Sentence: Meaning & Examples

Drill down is an intransitive phrasal verb meaning to move from a broad view to the smallest details. To use drill down in a sentence, give it a preposition and a target: “We drilled down into the sales figures until the fault appeared.” It describes going deeper, never summarising.

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Drill down at a glance

Drill down is intransitive and inseparable, so it always needs into, through, on or to.
Its forms are drill down, drills down, drilled down and drilling down.
The noun and adjective are hyphenated: a drill-down report.
It belongs to data, business and software writing, where it means moving to greater detail.
The usual error is dropping the preposition and writing drill down the data.

What does drill down mean?

Drill down is an intransitive phrasal verb meaning to examine a subject, a data set or a problem in finer and finer detail. The Cambridge entry for drill down records the move from a summary to its parts. One sense belongs to analysis, where a team drills down into costs or complaints; another belongs to computing, where a user drills down through menus or a dashboard to reach a single record. To analyze the figures is the plain-language neighbour, and to examine a case is what you do once you have drilled down to it. Where a number looks wrong, auditors probe the records, and a careful reader will scrutinize each line.

Sense	Plain meaning	Example sentence
Analytic detail	Study a subject at finer resolution	We drilled down into the returns to find the pattern.
Navigation	Open deeper levels of a menu or report	Click a region to drill down through the figures.
Problem tracing	Follow a fault to its smallest cause	The engineers drilled down to a single loose connector.
Business review	Move from totals to line items	The board drilled down on the worst-performing stores.

One limitation is worth stating plainly. Drill down does not mean to summarise or to simplify, and it never takes a direct object on its own. A summary moves from detail to overview, while drill down moves the other way, from overview to detail. Because the verb is intransitive, the target must follow a preposition such as into, through or to, so a sentence that omits it has no grammatical path.

How do you use drill down in a sentence?

The verb is intransitive and inseparable, so it cannot sit directly before a noun. The preposition carries the target: into for a topic or data set, through for a series of levels, to for a single end point, and on for an informal business focus.

Pattern	Example	What it signals
drill down into + noun	Let us drill down into the survey results.	The standard form for a single target.
drill down through + plural	She drilled down through five levels of the menu.	A sequence of layers, common in software.
drill down to + end point	The audit drilled down to one missing invoice.	Reaching the smallest unit.
drill down on + topic	He drilled down on the shipping costs.	Informal business focus, chiefly American.
drill-down as a noun	Open the drill-down view for the region.	The hyphenated noun or adjective form.

A cartoon card slots the preposition into a gap between drill down and a labelled record box. — The preposition carries the target of the verb.

Drill down in a sentence: examples across contexts

Drill down began as business and software language and now appears wherever a broad figure needs a closer look. The twelve sentences below move from a classroom to a boardroom, and each one names the level the speaker reached, which is the detail that keeps the verb precise.

Context	Example sentence	Why this works
Classroom	The class drilled down into one week of the weather diary.	A small data set makes the idea concrete.
Workplace email	Can you drill down into the late deliveries for March?	A polite request names the target and the month.
Data analysis	We drilled down through the regional totals to store level.	Names the path from broad to narrow.
Software help	Double-click the row to drill down into the record.	Pairs the verb with a clear user action.
News report	Reporters drilled down to the single payment that broke the rule.	Reaches a specific fact worth reporting.
Finance writing	Analysts drilled down on the hidden servicing fees.	Uses the informal on-pattern for a focus.
Science writing	The team drilled down into the anomalies in the sensor log.	Names the data set carrying the problem.
Marketing review	Let us drill down into why the campaign lost its first week.	The target is a question, so the verb leads to a cause.
Customer service	We drilled down through the call notes to the first complaint.	Shows a chronological path through records.
Project management	The review drilled down to three tasks that slipped.	Turns a vague delay into named items.
Academic prose	Rather than generalise, the study drills down into one village.	Contrasts detail work with broad claims.
Conversation	I drilled down into the receipt and found the double charge.	The everyday frame keeps the jargon light.

Two details stand out across those sentences. The verb almost always sits in the past tense when it reports finished analysis, and it almost always appears with figures or records rather than with physical objects, because the movement it describes is through information.

Drill down vs break down

Drill down and break down both divide a whole into parts, but the direction of travel differs. Break down splits a total into categories at roughly one level, while drill down moves repeatedly downward until a single item is reached.

Attribute	drill down	break down
Direction	Repeatedly deeper	One split into parts
Target	A single record or cause	A set of categories
Grammar	Needs into, through, to or on	Often takes a direct object
Typical field	Data, software, analysis	Budgets, engines, talks
Register	Business and technical	Neutral and wide

Verdict: break down a figure into its parts, then drill down into the one part that looks wrong.

Word forms and grammar of drill down

Drill down follows the regular verb drill and keeps the particle fixed. The table lists the inflections, the hyphenated noun, and the bare-object form that learners write by mistake.

Form	Part of speech	Example
drill down	phrasal verb, base form	Good analysts drill down before they conclude.
drills down	verb, third person	The dashboard drills down to the individual order.
drilled down	verb, past and past participle	We drilled down into the refund log.
drilling down	verb, present participle	While drilling down through the files, she found the error.
drill-down	noun and adjective	Open the drill-down view for the northern region.
drill down + object	non-standard	Write drill down into the data, not drill down the data.

Common mistakes with drill down

Incorrect: ~~We drilled down the sales figures.~~ Correct: We drilled down into the sales figures. Rule: Drill down is intransitive, so the target needs a preposition.
Incorrect: ~~The verb means to summarise the data.~~ Correct: The verb means to examine the data in more detail. Rule: Drill down moves toward detail, the opposite of summarising.
Incorrect: ~~She drilled down the menu to find the setting.~~ Correct: She drilled down through the menu to find the setting. Rule: A series of levels takes through.
Incorrect: ~~He drill-down the report.~~ Correct: He drilled down into the report. Rule: The hyphenated drill-down is a noun or adjective, never a verb.
Incorrect: ~~The essay drills down the poet’s life.~~ Correct: The essay examines the poet’s life. Rule: Formal academic prose usually prefers examine unless data is involved.

Practice using drill down

Work through the seven items, then read the reason with each answer.

Fill the gap: The manager asked us to ______ the complaints for the west region.
Choose the better word: First break down the budget, then (drill down / summarise) into the largest line.
Correct the error: The analyst drilled down the transaction log.
Build a sentence: use drill down through about a series of report pages.
Spot the register: which belongs in a data report — we drilled down into the outliers, or we poked around the weird numbers?
Rewrite with the noun: We drilled down into the region. Replace with drill-down.
Correct the direction: The report drills down from the single sale to the yearly total.

Answers

drill down into — the intransitive verb needs into before its target.
drill down — the second step moves deeper than the first, which is exactly the verb’s work.
The analyst drilled down into the transaction log — the missing preposition makes the sentence ungrammatical.
Model answer: She drilled down through four report pages to reach the daily sales.
We drilled down into the outliers — a data report keeps the technical term and drops the slang.
We opened the drill-down view for the region — the noun is hyphenated and follows an article.
The report drills down from the yearly total to the single sale — the movement must run from broad to narrow.

The bottom line

Use drill down in a sentence when a reader or a tool moves from a broad total to the smallest detail, and give the verb a preposition that names the target. The two nuances that decide most sentences are these: drill down is intransitive, so it needs into, through, to or on, and it always moves toward detail rather than toward summary. Where the task is a single split into categories, investigate the total or break down fits better.

A cartoon split scene contrasts one wide split of a pie with a staircase descending into a single slice. — The two verbs move in different directions.

Frequently asked questions about drill down

Is drill down one word or two?

As a verb it is two words, drill down, and it stays two words in every tense: drilled down, drilling down. The noun and the adjective are hyphenated, as in a drill-down report or a drill-down view. The closed form drilldown appears occasionally in software but is not standard outside that field.

What is the difference between drill down and drill into?

Drill into is a related phrasal verb that takes a direct object, as in drill into the rock or drill into the numbers. Drill down is intransitive and adds the idea of descending from a higher level. In data writing, drill down into combines both, naming the target after the inward movement.

Is drill down formal?

Drill down is standard in business, data and software writing, where it names a real operation. It can sound like jargon in literary or academic prose, which tends to prefer examine or analyse. The register is professional rather than casual, so it fits a report far better than a personal essay.

Can you drill down on a topic?

You can, and the pattern drill down on is common in American business speech. It treats the topic as a focus rather than a container, as in we drilled down on the delays. Careful editors often prefer drill down into, which is more widely accepted and slightly more precise.