Used and loved by millions
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
can be left empty
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'can be left empty' is correct and usable in English.
You can use it when you want to indicate that something is optional or that it does not need to be filled in. Example: On the application, the fields marked with an asterisk are required, while the others can be left empty.
✓ Grammatically correct
Wiki
Science
Academia
News & Media
Alternative expressions(20)
can be omitted
is optional
need not be completed
may be skipped
it's optional
may be left unfilled
is permissible to omit
can be left unmanned
can be left simple
can be left free
can be left unfilled
can be left vague
can be left null
can be left blank
can be left whole
can be marked empty
can be left unaware
can be left high
can be left nice
can be found empty
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
5 human-written examples
The Memo line is at the bottom left-hand side of the check, and it can be left empty unless you have specific information you'd like to share there.
Wiki
One hole, located in the osteotomy gap, can be left empty if other screws are sufficiently tight (Figure 4).
Cells can be left empty in which case the data in the respective experiments is not altered in that step.
Science
In an underspecified lexicon feature value slots can be left empty particularly for feature values that frequently show variation.
Any of these fields can be left empty, in which case the search engine will ignore that field, thus allowing for queries such as 'what causes cancer', by leaving the subject blank, setting the verb to 'cause' and the object to 'cancer'cancer
Science
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
The pbkfile parameter has been deprecated and should be left empty; more details can be found on the Watchout page.
Academia
The Roll(deg) will be left empty, since the roll is unconstrained for the target coordinates, and we can explore various roll angles later.
Academia
The other boxes should be left empty.
Wiki
The rest of the plate should be left empty.
Wiki
More often than not, our children get the best of us, and we can be left feeling empty and resentful.
News & Media
At present, authorities can charge an empty homes premium of 50 per cent on top of the council tax bill if a property is left empty for two years.
News & Media
Expert writing Tips
Best practice
When using "can be left empty", ensure the context clearly indicates which specific element is optional to avoid ambiguity. For example, specify "this field" or "the memo line".
Common error
Avoid assuming that because something "can be left empty", it should always be left empty. Sometimes providing the information is beneficial or even expected, even if not strictly required.
Source & Trust
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "can be left empty" functions as an adjectival phrase, modifying a noun (often implied) to indicate that something is optional or does not require a value. Ludwig AI confirms its grammatical correctness and usability.
Frequent in
Science
25%
Wiki
25%
News & Media
20%
Less common in
Academia
15%
Formal & Business
10%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "can be left empty" correctly indicates that something is optional and does not need to be filled. Ludwig AI validates its grammatical correctness and usability across various contexts. While straightforward, ensuring clarity in context and avoiding assumptions about implied necessity are crucial. This phrase is commonly used in technical documentation, forms, and general instructions to convey optionality. Related phrases, like "may be skipped" and "is optional", offer similar meanings with slightly different nuances.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it's optional
Simplifies the phrase to a direct statement of optionality.
can be omitted
Highlights the possibility of omitting something.
may be left unfilled
Uses 'unfilled' to describe the state of not being filled.
is permissible to omit
Emphasizes permission or allowance for omission.
need not be completed
Focuses on the lack of necessity to complete.
may be skipped
Focuses on the act of skipping as an alternative.
does not require completion
Specifies that completion is not a requirement.
is acceptable to leave vacant
Stresses acceptability with 'vacant' as the state.
it's okay to omit
Uses a more conversational tone with "it's okay".
leaving it blank is an option
Presents leaving something blank as a viable choice.
FAQs
How do I use "can be left empty" in a sentence?
Use "can be left empty" to indicate that a particular field, section, or area does not necessarily need to be filled or completed. For example: "The 'Additional Comments' section on the form "can be left empty" if you have no further information to add".
What's a synonym for "can be left empty"?
Synonyms include "can be omitted", "is optional", or "need not be completed". Choose the synonym that best fits the tone and context of your writing.
Is it better to use "can be left blank" or "can be left empty"?
"Can be left blank" and "can be left empty" are often interchangeable. However, "can be left blank" might be more appropriate when referring to physical spaces or forms, while "can be left empty" might be preferred for more abstract contexts, like leaving a variable empty in programming.
Which is correct: "can be left empty" or "may be left empty"?
Both "can be left empty" and "may be left empty" are grammatically correct and convey a similar meaning, that something is optional. The choice depends on personal preference and the specific nuance you want to express. "Can" suggests possibility, while "may" implies permission.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
80%
Authority and reliability
4.1/5
Expert rating
Real-world application tested