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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
unless
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "unless" is correct and usable in written English.
It is a conjunction used to introduce an exception to what has already been stated. For example, "I will not be able to attend the meeting unless I am feeling better by tomorrow."
✓ Grammatically correct
News & Media
Formal & Business
Wiki
Alternative expressions(20)
exception
in any other case
unless notified differently
except as specified
if instead
except when noted
without prejudice to the foregoing
without
unless proven otherwise
unless specified differently
unless advised otherwise
in accordance with the foregoing
absent contrary evidence
unless demonstrated otherwise
unless advise otherwise
unless specified
barring evidence to the contrary
unless directed otherwise
failing that
unless reported otherwise
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
The escalators are not quite the liberating devices they were on the Pompidou Centre, where they took citizens on a free ride to the sky, but take you to a smallish landing beyond which (unless you have business in the building) you cannot go.
News & Media
And unless Labour is able to embrace a politics of aspiration and inclusion, a politics that defies some of the traditional labels that have dogged politics for so long, then it's not going to win".
News & Media
The political rhetoric over immigration will further intensify on Monday as David Cameron promises to ban all EU nationals from claiming most benefits after six months in the UK unless they can prove they have been continuously looking for work over that period.
News & Media
"We will propose a 'double majority' rule – meaning that unless England, Scotland, Wales and Northern Ireland each vote to leave the EU, as well as the UK as a whole, Britain would remain a member state".
News & Media
If forced to say, I would go the Swedish route; but of course we can't do that unless we're prepared to put all troubled banks in receivership.
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
Nick also highlights that there cannot be a stronger economy, unless we have a fairer society.
News & Media
There's no reason for children to avoid caffeine drinks unless they become overactive after having them, which obviously isn't the case with your son.
News & Media
I always tried to avoid contact with those violent guards unless it was extremely necessary.
News & Media
Its parties are as legendary, as they are fun, though you might wanna stay out of the downstairs bar unless you take this sort of thing very, very seriously.
News & Media
Cockell said, "We are being pushed into a position where either things will fail or the system has to change … we can't cope unless someone takes that big step … to change the way we operate".
News & Media
Expert writing Tips
Best practice
Use "unless" to introduce a condition that must be false for the main clause to be true. This helps create clear and concise conditional statements.
Common error
Avoid using "unless" when you mean "if". "Unless" indicates what must not happen, while "if" states what must happen. Mixing them can reverse the intended meaning.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "unless" is to act as a subordinating conjunction. As Ludwig AI confirms, it introduces a subordinate clause that expresses a condition upon which the main clause depends. Examples in Ludwig show it connecting conditional exceptions.
Frequent in
News & Media
60%
Formal & Business
15%
Wiki
10%
Less common in
Science
5%
Encyclopedias
5%
Reference
5%
Ludwig's WRAP-UP
In summary, "unless" is a frequently used subordinating conjunction that introduces a condition that must be false for the main clause to be true. Ludwig AI validates its grammatical correctness and its examples showcase its usage across various contexts, particularly in News & Media. It is important to remember, as detailed in the writing guidance, that "unless" should not be confused with "if". The related phrases provide alternative ways to express similar conditional exceptions, adding versatility to your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
except if
Replaces "unless" with a more direct conditional phrase, emphasizing the exception.
except when
Similar to "except if" but specifies a condition related to time.
if not
A more concise way of expressing the same condition, focusing on the negation.
only if not
Highlights the necessity of the negative condition for the main clause to be true.
on condition that not
A more formal alternative, emphasizing a strict requirement for the exception.
save where
Indicates an exception, typically used in legal or formal contexts.
barring the case that
Introduces an exception, often used to explicitly exclude a particular scenario.
but only if
Highlights a specific condition that must be met for the main clause to be valid.
with the exception that
A more elaborate phrase explicitly stating that an exception exists.
in the absence of
Focuses on the lack of a particular condition as the trigger for the main clause.
FAQs
How do I use "unless" in a sentence?
"Unless" introduces a condition that, if not met, will cause a certain outcome. For example, "I will not go "unless it stops raining"" means I will only go if the rain stops.
What can I say instead of "unless"?
Alternatives to "unless" include "except if", "except when", or "if not", depending on the specific nuance you want to convey.
Which is correct, "unless" or "if not"?
Both "unless" and "if not" can be grammatically correct, but they are not always interchangeable. "Unless" often sounds more natural in many contexts. "I won't go unless you do" is similar to "I won't go if you don't" but the first is more concise.
What's the difference between "unless" and "until"?
"Unless" introduces a condition, while "until" specifies a time. "Unless you apologize, I won't forgive you" means forgiveness depends on an apology. "I'll wait "until 5pm"" means the waiting will end at a specific time.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested