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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
sign
Grammar usage guide and real-world examplesUSAGE SUMMARY
"sign" is a correct and usable word in written English.
It can be used as a noun, verb, or adjective. Example sentence: Please sign the agreement before leaving.
✓ Grammatically correct
News & Media
Formal & Business
Science
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
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Several hundred supporters chanted for Erdoğan, the party's founder, but there was little sign of the huge crowds that gathered after past election victories.
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A good sign?
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Expert writing Tips
Best practice
When using "sign" as a verb, ensure you specify what is being signed (e.g., "Sign the document"). When used as a noun, clarify the type of "sign" you are referring to (e.g., "street sign", "astrological sign", "omen").
Common error
Avoid using "sign" when you mean "signal", which refers to a specific communicative action, while "sign" is a broader indication or symbol. For instance, use "signal a turn" rather than "sign a turn".
Source & Trust
94%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The word "sign" functions primarily as both a noun and a verb. As a noun, it represents a visible indication or symbol. As a verb, it means to affix one's signature to something or to communicate through gestures, consistent with Ludwig AI's analysis.
Frequent in
News & Media
70%
Formal & Business
15%
Science
5%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The word "sign" is a versatile term functioning as both a noun and a verb, frequently appearing in diverse contexts from news reporting to formal agreements. Ludwig AI confirms its grammatical correctness and widespread applicability. As a noun, "sign" denotes a visible indication or symbol, while as a verb, it signifies either affixing a signature or using gestures for communication. Given its high frequency and varied use across reputable sources like The Guardian and The New York Times, understanding its nuances is crucial for effective communication. Be mindful to choose "sign" over "signal" when referring to general indications rather than specific communicative actions.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
signal
Refers to a specific communication or gesture.
indication
Focuses on the act of pointing something out or suggesting something indirectly.
symbol
Conveys a deeper meaning or representation.
mark
Emphasizes a visible impression or trace left behind.
omen
Highlights a predictive or portentous event.
symptom
Specifically refers to a manifestation of a disease or problem.
evidence
Highlights factual proof or indication.
gesture
Implies a physical movement used for communication.
endorse
Implies formal approval or agreement.
authorize
Suggests granting official permission.
FAQs
How to use "sign" in a sentence?
What can I say instead of "sign" (visible indication)?
You can use alternatives like "indication", "mark", or "omen" depending on the context.
What is the difference between "sign" and "signal"?
What does it mean to "sign up"?
To "sign up" means to register or enroll for something, like a service, newsletter, or event.
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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
94%
Authority and reliability
4.8/5
Expert rating
Real-world application tested