Due means expected to happen or arrive at a particular time (the report is due on Friday); owed as a debt or obligation (payment is now due); or, in the phrase due to, caused by or because of something (the delay was due to bad weather). As an adverb it also means directly in a compass direction (due north).
Etymology
Due comes from Old French deu, the past participle of devoir (to owe), itself derived from Latin debitus (owed), from debere (to owe or be indebted). The word entered English in the 14th century carrying the core sense of something that is rightfully owed. The same Latin root debere gives modern English debt, debit, and duty — all words that share the idea of obligation or what is rightfully required.
Example Sentences
| Sentence | Level | Usage note |
|---|---|---|
| The report is due on Friday afternoon. | A2 | due = expected by a deadline |
| My library books are due back tomorrow. | A2 | due = must be returned by a time |
| The flight is due to land at half past six. | B1 | due to + infinitive = scheduled to |
| The match was cancelled due to heavy rain. | B1 | due to = because of (cause) |
| We will inform all applicants of the outcome in due course. | B2 | in due course = at the appropriate time |
| With all due respect, I believe the data does not support that conclusion. | C1 | with due respect = polite disagreement formula |
Common Collocations
| Collocation | Example |
|---|---|
| due to | The delay was due to a signalling fault. |
| due date | Make a note of the due date for each assignment. |
| in due course | We will respond in due course. |
| overdue | This review is long overdue. |
| due respect | With due respect, that argument is flawed. |
| due diligence | Investors must carry out due diligence before committing. |
| due north / south / east / west | Head due north for two miles. |
| payment due | The final payment is due on the 30th. |
| due consideration | After due consideration, the committee rejected the proposal. |
| become due | The invoice will become due in thirty days. |
Usage Notes
- Deadline sense: When due means expected or required by a certain time, it normally follows a linking verb: The essay is due next Monday. You can also say someone or something is due to do something: She is due to arrive at noon.
- Due to vs because of: Traditionally, due to should follow a linking verb and modify a noun (the failure was due to poor planning), while because of modifies a verb (we failed because of poor planning). In modern British English, due to is widely accepted in both positions, but in formal writing, keeping the traditional rule is safer.
- Compass direction: As an adverb, due means exactly or directly: due east, due west. This use is limited to directions and does not extend to other senses.
- In due course: This formal phrase means at the right or expected time, without undue haste or delay. It is very common in official letters and business English as a polite way of saying something will happen eventually.
- Due diligence: In legal and business contexts, due diligence is a fixed phrase meaning the thorough investigation required before entering a contract or making an investment. Do not confuse it with general careful behaviour.
Common Mistakes
Watch Out For
We were late due to we missed the bus.
We were late because we missed the bus. (due to is followed by a noun or noun phrase, not a clause)
The project failed due to we didn’t have enough time.
The project failed due to a lack of time. / The project failed because we didn’t have enough time.
She is due arrive at three.
She is due to arrive at three. (due to + infinitive requires to)