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
i deduced that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I deduced that" is correct and usable in written English.
It can be used when you want to express a conclusion or inference you have made based on available information or evidence. Example: "After analyzing the data, I deduced that the new marketing strategy was effective in increasing sales."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
I concluded that
I inferred that
I gathered that
I assumed that
I reasoned that
I determined that
I understood that
I ascertained that
I surmised that
I speculated that
I presumed that
i assumed that
i interpreted that
i gathered that
i concluded that
i inferred that
i determined that
i gleaned that
it i reasoned that
i came to the conclusion that
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
22 human-written examples
"Somehow I deduced that the victim was done in by poison.
News & Media
I deduced that he was going to attack me and started to panic.
News & Media
Looking at a map later, I deduced that this one was private too.
News & Media
From which I deduced that Siegfried Sassoon did not really like to hear any name dropped but his own.
News & Media
I deduced that I needed to go through one of the doors, so that's what I did.
News & Media
Between the two, I deduced that the entire nine-foot couch could be had for a thousand dollars more than the slipcover I had agreed to replace.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
37 human-written examples
Back in June I'd deduced that Facebook at Work was connected with Rasmussen's work in London, but what I found out from sources after that report was that this was more than casual: this was his baby.
News & Media
From this fact, I deduce that these outings have a criminal character: he takes an outbound train in order to rob people on the return journey to Brownsville.
News & Media
From this distribution I deduce that the problem is not that people aren't hearing about climate change, but that they don't want to know.
News & Media
From this I deduce that the Kinect login recognises only facial features, and that my arse thankfully doesn't resemble my face.
News & Media
From this statistical analysis, I deduce that not only is the theatre dying but the characters onstage are dropping like flies.
News & Media
Expert writing Tips
Best practice
Use "I deduced that" to clearly show that a conclusion is based on reasoning and evidence, rather than intuition or guesswork.
Common error
Avoid using "I deduced that" when the conclusion is merely a guess or a hunch. Ensure there is sufficient evidence to support the deduction.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I deduced that" functions as a clause opener, introducing a statement that represents a conclusion reached through reasoning or inference. Ludwig's examples showcase this usage in various contexts, demonstrating its role in presenting logical outcomes.
Frequent in
News & Media
64%
Science
16%
Formal & Business
8%
Less common in
Academia
4%
Wiki
4%
Reference
0%
Ludwig's WRAP-UP
The phrase "I deduced that" is a common and grammatically correct way to introduce a conclusion reached through reasoning, as confirmed by Ludwig. It's primarily used in news and media, but also appears in scientific contexts. When writing, use "I deduced that" to signal a logical outcome based on evidence, rather than a mere guess. Remember that Ludwig provides numerous examples of its usage, affirming its place as a reliable way to express a reasoned conclusion.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I concluded that
Emphasizes a final decision or judgment based on evidence.
I inferred that
Suggests deriving a conclusion from implicit information or hints.
I gathered that
Implies collecting information to form an understanding or conclusion.
I reasoned that
Highlights the logical process used to arrive at a conclusion.
I determined that
Focuses on the act of finding something out definitively.
I understood that
Implies a comprehension of a situation leading to a certain belief.
I ascertained that
Highlights the effort to discover something with certainty.
I surmised that
Suggests forming an opinion or making a judgment based on incomplete information.
I speculated that
Indicates forming a theory or conjecture without firm evidence.
I presumed that
Implies assuming something to be true based on probability or past experience.
FAQs
What does "I deduced that" mean?
The phrase "I deduced that" means that you have come to a conclusion based on reasoning and available information. It indicates that you have used logic to arrive at an understanding.
How can I use "I deduced that" in a sentence?
You can use "I deduced that" to introduce a conclusion you've reached. For example, "After analyzing the data, I deduced that the marketing campaign was successful."
What can I say instead of "I deduced that"?
You can use alternatives like "I concluded that", "I inferred that", or "I gathered that", depending on the specific nuance you want to convey.
Is it better to say "I deduced that" or "I assumed that"?
"I deduced that" implies a logical conclusion based on evidence, while "I assumed that" suggests a belief taken for granted without proof. Use "I deduced that" when you have evidence to support your conclusion.
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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
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested