I once thought

USAGE SUMMARY

"I once thought" is a correct and usable phrase in written English.
You can use it to indicate that you used to have an opinion or belief in the past but no longer do. For example: "I once thought of myself as a hopeless romantic, but now I recognize that I'm much more practical."

✓ Grammatically correct

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

I once thought of resigning".

The New Yorker

I once thought I loved Mary.

The New Yorker

"It's not as easy as I once thought".

The New York Times

I once thought motherhood loosened a woman's grasp on sanity.

The New Yorker

A-levels are a waste of time, I once thought.

The Guardian

I once thought this an inescapable part of my personality.

The New York Times - Magazine

I once thought the Earl's verse would be my epitaph, too.

The New Yorker

Where I once thought my constant vigilance was supportive, I realized it was nerve-racking.

The New York Times

I once thought that I could fool others into believing this was not true.

The New York Times

I once thought history depicted long-lost civilizations that are researched through old manuscripts.

Stanford University

I once thought 1 was going to make an immense bag.

Cornell University

Expert writing Tips

Best practice

Use "I once thought" to introduce a contrast between a past perspective and a current understanding, adding depth to your narrative or argument.

Common error

Avoid using "I once thought" when expressing a current belief. This phrase is specifically for highlighting a change in perspective.

Linguistic Context

The phrase "I once thought" functions as an introductory clause to express a past belief or opinion that is no longer held by the speaker. It often sets up a contrast with a current viewpoint, adding nuance to the statement. Ludwig AI examples showcase its usage in diverse contexts.

Expression frequency: Very common

Frequent in

News & Media

69%

Academia

17%

Formal & Business

14%

Less common in

Science

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

The phrase "I once thought" is a prevalent and grammatically sound way to introduce a past belief or opinion that has since changed. According to Ludwig, this expression is commonly found in news and media and academic contexts, serving to create a contrast between past and present perspectives. When writing, it's best practice to use this phrase when you want to highlight a shift in your understanding or viewpoint. However, be mindful of using it to describe your current beliefs. For expressing alternatives, consider options such as ""I used to believe"" or ""previously I considered"", which offer slightly different nuances. As Ludwig AI confirms, the expression follows standard grammatical rules and is fit for a variety of contexts.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I used to believe

Focuses on a past belief, emphasizing the act of believing rather than a thought.

I formerly assumed

Highlights a previous assumption, suggesting a lack of evidence or investigation at the time.

I previously considered

Emphasizes a past consideration or evaluation that has since changed.

My initial thought was

Highlights the first impression or idea that came to mind.

At first, I believed

Indicates that a belief was held at the beginning but has been modified or abandoned.

Initially, I presumed

Similar to 'assumed', but with a slightly more formal tone.

I once held the opinion

Emphasizes that a particular opinion was held in the past.

I had once imagined

Focuses on a past imagination or visualization that is now seen differently.

Once, I was under the impression

Highlights a past impression or understanding that was later corrected.

In the past, I surmised

Indicates a past conjecture or inference based on limited evidence.

FAQs

How can I use "I once thought" in a sentence?

You can use "I once thought" to introduce a past belief that you no longer hold. For example, "I once thought that success was only measured by wealth, but now I value personal fulfillment more."

What is a good alternative to "I once thought"?

Alternatives include "I used to believe", "I formerly assumed", or "previously I considered". The best choice depends on the specific nuance you want to convey.

Is it correct to say "I thinked" instead of "I once thought"?

No, "I thinked" is not grammatically correct. The correct past tense of 'think' is 'thought'. "I once thought" is used to express a past belief that has changed.

What's the difference between "I used to think" and "I once thought"?

Both phrases convey a past belief, but "I used to think" often implies a habitual or repeated thought, while "I once thought" can refer to a single instance of a thought or belief.