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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
i speculated that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"I speculated that" is correct and usable in written English.
You would use it when you are making an assumption based on evidence or clues that you have. For example, "I speculated that the loud noise was coming from the kitchen, so I went to investigate."
✓ Grammatically correct
News & Media
Science
Alternative expressions(19)
I supposed that
I surmised that
I hypothesized that
I predicted that
I inferred that
I assumed that
I imagined that
I postulated that
I alleged that
I considered that
i suggested that
i inferred that
i considered that
i imagined that
i assumed that
is speculated that
i expected that
i anticipated that
i suspected 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
49 human-written examples
I speculated that event could have ruptured the campaign cosmos in some fundamental way.
News & Media
"I speculated that I must have been a mass murderer in a previous life, I was paying for that now".
News & Media
Not long ago, two of my colleagues and I speculated that messiness, like tidiness, might serve a purpose.
News & Media
In last week's 2014 roundup, I speculated that the $100m Bollywood wasn't far enough – right around the corner, it transpires.
News & Media
He reminds me that the last time I wrote about the question I speculated that he was suffering from ennui.
News & Media
In the previous post, I speculated that our rate drops were related to the departure of a heavy health care user.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
11 human-written examples
In my book "The Rest Is Noise," I speculate that Hitler alluded to "Parsifal" in his horrific 1939 speech prophesying the extermination of the Jews.
News & Media
I speculate that the connection is made at least 95 per cent of the time.
News & Media
Although I cannot be sure, I speculate that two developments since then have made a repeat performance of the later 1990s unlikely in the years ahead.
News & Media
The outgoing editor of The Archers, Sean O'Connor, has recently taken the job of producer on EastEnders, and I speculate that he might like to take her with him.
News & Media
I speculate that human beings' — not just Americans' — attitudes toward where they live, toward their pieces of ground, their houses, their previous residences and future ones, are part of their feelings about being alive.
News & Media
Expert writing Tips
Best practice
Use "I speculated that" to introduce an idea or possibility that you are considering, but acknowledge that it is not a confirmed fact. This can add nuance to your writing and show critical thinking.
Common error
Avoid presenting speculation as definitive truth. Always ensure your language reflects the tentative nature of the speculation. Use phrases such as "it is possible that", "it seems likely that", or "it might be that" in conjunction with the phrase to reinforce this tentativeness.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I speculated that" functions as a declarative statement introducing a hypothesis, conjecture, or reasoned guess. It signals that the speaker is presenting an idea as a possibility, without definitive proof. Ludwig AI confirms this is a correct and usable phrase.
Frequent in
News & Media
63%
Science
20%
Formal & Business
17%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "I speculated that" is a commonly used and grammatically sound phrase for introducing a reasoned guess or conjecture. Ludwig AI confirms this. It's frequently found in news and media, as well as scientific contexts. When employing this phrase, it's best practice to avoid presenting speculation as fact and to maintain a tone that reflects the tentative nature of the speculation. Alternatives such as "I supposed that", "I surmised that", and "I hypothesized that" can be used for related but slightly different meanings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I supposed that
Expresses a less assertive level of confidence in the assumption.
I surmised that
Implies a conclusion based on limited evidence or intuition.
I hypothesized that
Suggests a more formal, scientific basis for the speculation.
I predicted that
Focuses on foretelling a future event based on current information.
I inferred that
Highlights the process of reaching a conclusion from indirect evidence.
I assumed that
Indicates a belief taken for granted without proof.
I imagined that
Suggests a scenario created in the mind, possibly without concrete evidence.
I postulated that
Implies putting forward an idea as a basis for reasoning or discussion.
I alleged that
Suggests making a claim without definitive proof.
I considered that
Implies a more thoughtful and deliberate process of weighing possibilities.
FAQs
How can I use "I speculated that" in a sentence?
Use "I speculated that" when you are expressing a reasoned guess or conjecture about something. For example, "I speculated that the delay was due to unforeseen circumstances."
What phrases are similar to "I speculated that"?
You can use alternatives such as "I supposed that", "I surmised that", or "I hypothesized that" depending on the context and the level of formality. See also: "I supposed that", "I surmised that", "I hypothesized that".
Is "I speculated that" suitable for formal writing?
Yes, "I speculated that" can be used in formal writing, particularly when presenting a considered opinion or interpretation. However, it's essential to ensure that the tone of your writing is appropriate and that the speculation is supported by evidence.
What's the difference between "I speculated that" and "I predicted that"?
"I speculated that" implies forming a theory or conjecture without firm evidence, whereas "I predicted that" suggests foretelling a future event based on current information or trends. Consider using "I predicted that" if you are basing your statement on observable trends.
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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
4.5/5
Expert rating
Real-world application tested