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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
ought
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word 'ought' is correct and is often used in written English.
It can be used as a verb meaning "should" or "must," or as a noun meaning "what one should do." For example: We ought to leave early if we want to make it to the meeting on time.
✓ Grammatically correct
News & Media
Formal & Business
Science
Alternative expressions(8)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
(Jones's response was that they ought to lobby for more federal support).
News & Media
I don't like to spread panic unless I absolutely have to, but looking at Gove's pop-up initiatives, I think we ought be keeping our eye on the bubbles.
News & Media
According to the sculptor, Blind Light, as the installation was called, undermined what architecture ought to do: "Architecture is supposed to be the location of security and certainty about where you are.
News & Media
He said: "Some are saying we ought to proceed with the case... some are saying we must push through and get a date".
News & Media
Towards the end, she said to Dick that he should remarry, and he ought to think about marrying me.
News & Media
"We think it ought to be public policy debate," he said.
News & Media
More precisely, I don't think email ought to die completely.
News & Media
"A big decision on a matter such as this, it ought to be owned by the parliament and not by any particular party.
News & Media
Those complaints are admissions that the state is, or ought to be, all of us working collectively for the common good.
News & Media
The recent attack on Unite (Editorial, 15 December) ought to be beneath your paper.
News & Media
"[It] ought to be encouraged to be more publicly visible both in terms of encouraging people to use it and, where meaningful claims have been made, to actually publicise those findings," he said.
News & Media
Expert writing Tips
Best practice
When using "ought", ensure the following verb is in the infinitive form with "to" (e.g., "You ought to study").
Common error
Avoid omitting "to" after "ought" when it's used as a modal verb. Saying "You ought go" is grammatically incorrect; the correct form is "You ought to go".
Source & Trust
95%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "ought" is that of a modal verb, expressing obligation, advisability, or expectation. This aligns with Ludwig AI's assessment of its common usage. Examples from Ludwig show its use in expressing what should be done or what is likely to happen.
Frequent in
News & Media
60%
Formal & Business
20%
Science
10%
Less common in
Academia
5%
Encyclopedias
3%
Wiki
2%
Ludwig's WRAP-UP
In summary, the word "ought" functions as a modal verb expressing obligation, advisability, or expectation. Ludwig AI confirms its grammatical correctness and provides numerous examples demonstrating its usage in various contexts, particularly in News & Media. While often interchangeable with "should", "ought" tends to carry a slightly more formal tone and a stronger sense of moral duty. Remember to always use "to" after "ought" when it functions as a modal verb (e.g., "You ought to go"). Understanding these nuances will ensure accurate and effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
should
A more common and generally interchangeable alternative, often used in similar contexts to express obligation or recommendation.
must
Indicates a stronger sense of obligation or necessity than "ought".
need to
Emphasizes necessity, often in a more practical or immediate sense.
have to
Suggests an external obligation or requirement.
had better
Implies a warning or negative consequence if the action is not taken.
it is advisable to
A more formal way of expressing a recommendation or suggestion.
it is recommended that
Offers a more official or authoritative suggestion.
it would be wise to
Highlights the prudence or wisdom of taking a particular action.
be supposed to
Indicates an expectation or obligation, often based on an agreement or arrangement.
it is your duty to
Emphasizes a moral or ethical obligation.
FAQs
How do you use "ought" in a sentence?
"Ought" is used to express obligation or advisability, similar to "should". For example, "You ought to apologize" means you should apologize. Remember to follow "ought" with "to" and the base form of the verb.
What's the difference between "ought" and "should"?
While often interchangeable, "ought" carries a slightly stronger sense of moral obligation or duty than "should". "Ought" is also somewhat more formal.
Is it correct to say "ought to of"?
No, "ought to of" is incorrect. The correct form is "ought to have", which is used to express something that should have been done in the past. For example, "You ought to have called".
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
95%
Authority and reliability
4.6/5
Expert rating
Real-world application tested