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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
I firstly thought
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I firstly thought" is not correct in standard written English.
The correct expression would be "I first thought." Example: "I first thought that the meeting was scheduled for next week."
⚠ May contain grammatical issues
News & Media
Wiki
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
1 human-written examples
I firstly thought Gil (Mila's dad) was excellently written, with the usual flair seen in Rosoff's books.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
59 human-written examples
"I firstly think I must and want, for the record, to refer to events of the last few week," he said.
News & Media
There are two things to think about if you're considering employing your first member of staff: Firstly, think about whether you've generated enough cash to cover their monthly salary.
News & Media
Firstly, thinks Krugman, the troika of international lenders – the entity consisting of the European commission, the European Central Bank and the International Monetary Fund – is effectively demanding that the policy regime of the past five years be continued indefinitely: "Where is the hope in that?" Secondly, the political implications of a yes vote would be "deeply troubling", he says.
News & Media
Firstly, think about how you see yourself now - describe yourself and your roles in great detail.
News & Media
Let's firstly think about what the statement means in its totality and then consider how each individual component works within said totality, and on it's own.
News & Media
Firstly, think of how you want the tail to look.
Wiki
Firstly, I thought, who are these "gay voters"?
News & Media
Firstly, I thought the setting needed to be a bit more developed.
News & Media
Firstly, I thought that Rattle had successfully created a pessimistic voice in Violet, encompassing the downtrodden attitude of some British people after the harsh times throughout the second world war.
News & Media
Addressing the reception, the prince said: "Firstly I think I must, and want, for the record, to refer to the events that have taken place in the last few weeks, and I just wish to reiterate and to reaffirm the statements which have already been made on my behalf by Buckingham Palace".
News & Media
Expert writing Tips
Best practice
Consider restructuring your sentence to use alternatives like "initially", "at first", or "to begin with" for a more polished and grammatically sound expression of your initial thought.
Common error
Many writers mistakenly use "firstly" instead of "first" as an adverb. Remember that "first" can function as an adverb, while "firstly" often sounds overly formal or even incorrect in modern English. Sticking to "first" will ensure clarity and grammatical correctness.
Source & Trust
83%
Authority and reliability
2.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I firstly thought" functions as an introductory expression, attempting to preface a thought or opinion. However, Ludwig AI identifies this phrasing as incorrect, suggesting that "I first thought" is the grammatically sound alternative. This introductory role aims to set the stage for what follows.
Frequent in
News & Media
50%
Wiki
25%
Science
25%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "I firstly thought" is generally considered grammatically incorrect, with the preferred alternative being "I first thought". While "firstly" is a valid adverb in some contexts, it doesn't fit well when describing an initial thought or opinion. Ludwig AI confirms this assessment. Alternative phrases like "initially I thought" or "at first I thought" offer more polished and grammatically sound options. When writing, it's best to stick with "first" to ensure clarity and correctness. The limited examples available suggest it has a rare frequency across News & Media, Wiki, and Science domains.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I first thought
Employs the correct adverb "first" instead of "firstly", ensuring grammatical accuracy.
I initially thought
Replaces "firstly" with "initially", providing a more standard and grammatically sound alternative.
I had originally thought
Uses "originally" to convey that the thought may have changed over time.
At first, I thought
Adds "at first" for emphasis, indicating a thought that occurred at the beginning.
To begin with, I thought
Replaces "firstly" with "to begin with", changing the introductory phrase to a slightly more formal tone.
In the beginning, I thought
More elaborative than the others, specifying that a thought appeared at the start.
My initial thought was
Restructures the sentence to emphasize the thought itself, rather than the act of thinking.
Initially, my thought was
More emphatic and elaborated version of the previous one.
My original thought had been
It's the passive form of the previous alternative.
My first impression was
Alters the phrase to focus on a first impression, which is a specific type of initial thought.
FAQs
Is it correct to say "I firstly thought"?
No, the correct phrasing is "I first thought". The adverb "firstly" is often misused in place of "first" in this context. While "firstly" is grammatically valid in certain situations, it's not appropriate when describing an initial thought or opinion.
What can I say instead of "I firstly thought"?
You can use alternatives like "I first thought", "initially I thought", or "at first I thought", depending on the context and the level of formality you want to convey.
What's the difference between "I first thought" and "I firstly thought"?
"I first thought" is the grammatically correct and more commonly used phrase to describe an initial thought. "I firstly thought" is generally considered incorrect and sounds awkward. Use "first" as the adverb in this construction.
How can I use "I first thought" in a sentence?
You can use "I first thought" to introduce an initial opinion or idea that you later changed or elaborated on. For example, "I first thought the task was impossible, but then I realized it could be done with teamwork".
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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
83%
Authority and reliability
2.2/5
Expert rating
Real-world application tested