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
one thing is plain
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "one thing is plain" is correct and usable in written English.
It can be used to indicate that a particular fact or conclusion is clear or obvious. Example: "After reviewing the evidence, one thing is plain: we need to change our strategy."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
one thing is true
one thing is obvious
It is clear that
it is evident
sure as eggs is eggs
one thing is certainly
the die is cast
one thing is certain
it is clear
it's abundantly clear
it is undeniable that
one thing is sure
without a doubt
one thing is definite
you can be sure that
it is obvious
one thing is evident
one thing is clear
it is a given that
One thing is certain
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
4 human-written examples
One thing is plain.
News & Media
One thing is plain to see, even for the layman; the terroir of Tavel is unique.
News & Media
With roughly 54percentt of the world's population living in urban areas today, and 66percentt of people expected to live in cities by 2050, one thing is plain; these relationships aren't no longer just nice to have.
News & Media
Despite the complexities, one thing is plain: whatever the Fund's political bosses end up deciding, the IMF as an institution can expect to be bitterly criticised.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
One thing was plain after this anti-climactic comedown from Wednesday's 6-0 Champions League win against Ludogorets.
News & Media
And one thing is certain: White Plains, which has far less housing in its downtown area, is cheaper.
News & Media
With this said, one thing is clear.
Science
One thing is that patients behave strangely.
Science
One thing has been plain during his time in charge of Italy – he wants his voice to be heard the loudest.
News & Media
One thing about them is plain, though: they are huge.
News & Media
One answer is plain.
News & Media
Expert writing Tips
Best practice
Use "one thing is plain" to introduce a straightforward, easily understood conclusion or observation following a complex or detailed explanation.
Common error
Avoid using "one thing is plain" in very casual or informal settings. Simpler phrases like "it's clear" or "it's obvious" might be more appropriate.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "one thing is plain" functions as an introductory phrase, signaling that the speaker or writer is about to present a clear, easily understood conclusion or observation. According to Ludwig AI, it commonly precedes a key point or summary statement.
Frequent in
News & Media
70%
Science
20%
Formal & Business
10%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "one thing is plain" is used to introduce a clear and obvious point, functioning as an introductory phrase that emphasizes certainty. Ludwig AI indicates that it is grammatically correct and most commonly found in neutral and formal contexts like news and media, as well as scientific writing. While effective in conveying clarity, it's important to consider the register and avoid overuse in informal settings, where simpler phrases might be more appropriate.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it's quite clear
Emphasizes the obviousness of something with a slightly more informal tone.
it's abundantly clear
Stresses the clarity of a situation or fact, making it undeniably obvious.
it is evident
States that something is easily seen or understood, often used in a more formal context.
it is obvious
Indicates that something is easily perceived or understood, similar to "plain" but more direct.
it's crystal clear
Highlights the lucidity and lack of ambiguity of a situation or fact.
it's patently obvious
Uses "patently" to emphasize the obviousness, often implying it should be clear to everyone.
it's readily apparent
Indicates that something is easily noticed or understood, suggesting a quick and easy comprehension.
the writing is on the wall
Suggests an impending outcome is clear from current signs or events, often with a negative connotation.
it's as clear as day
Emphasizes the obviousness of something by comparing it to the clarity of daylight, more informal.
the die is cast
Implies that a decision has been made and its consequences are unavoidable, shifting focus to the finality of the situation.
FAQs
How can I use "one thing is plain" in a sentence?
Use "one thing is plain" to introduce a statement that is easily understood or obvious after some consideration. For example: "After reviewing the data, "one thing is plain": we need to adjust our marketing strategy."
What phrases are similar to "one thing is plain"?
Similar phrases include "it is obvious", "it is clear", or "it is evident". The best choice depends on the specific context and desired tone.
Is it better to say "one thing is plain" or "one thing is clear"?
Both phrases are grammatically correct and convey a similar meaning. "One thing is clear" might be slightly more common in contemporary usage, while ""one thing is plain"" can add a touch of formality.
Can "one thing is plain" be used in informal conversations?
While grammatically correct, ""one thing is plain"" leans towards formal or neutral registers. In informal conversations, simpler alternatives like "it's obvious" or "it's clear" might be more suitable.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested