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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
lost in thought
Grammar usage guide and real-world examplesUSAGE SUMMARY
"lost in thought" is a perfectly suitable and common phrase in written English.
It is used to describe someone who is preoccupied with their own thoughts and is not focused on the outside world. For example, "John sat alone, lost in thought, pondering the possible outcomes of his next move."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
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
60 human-written examples
Kataria seemed lost in thought.
News & Media
He looks lost in thought.
News & Media
The mahout seemed relaxed, lost in thought.
News & Media
He is lost in thought.
News & Media
Pearson looks lost in thought.
News & Media
He just stared ahead, lost in thought.
News & Media
He was momentarily lost in thought.
News & Media
He was always lost in thought, dreaming.
News & Media
So I spent a lot of time lost in thought.
News & Media
You're walking along the street, lost in thought.
News & Media
She looks lost in thought for a second.
News & Media
Expert writing Tips
Best practice
Combine "lost in thought" with sensory details to enhance the reader's experience, such as 'lost in thought, staring out the rain-streaked window'.
Common error
While effective, overuse of "lost in thought" can become repetitive. Vary your descriptions of internal reflection using synonyms like "absorbed in contemplation" or "preoccupied with one's thoughts" to maintain reader engagement.
Source & Trust
87%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "lost in thought" functions primarily as an adjective phrase, modifying a noun or pronoun to describe a state of being deeply absorbed in one's own thoughts. Ludwig AI confirms its proper grammatical usage.
Frequent in
News & Media
66%
Academia
12%
Science
10%
Less common in
Wiki
6%
Formal & Business
3%
Reference
3%
Ludwig's WRAP-UP
In summary, "lost in thought" is a common adjective phrase used to describe someone deeply absorbed in their internal musings. Ludwig AI confirms its grammatical correctness and wide applicability across various contexts. As Ludwig examples show, the phrase is particularly prevalent in News & Media and academic writing, with a neutral register suitable for both formal and informal settings. While synonyms like "preoccupied with one's thoughts" and "absorbed in contemplation" offer alternative ways to express this idea, "lost in thought" remains a versatile and effective choice. Just avoid overusing the phrase.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
preoccupied with one's thoughts
Highlights the state of being mentally engaged and focused internally.
immersed in thought
Focuses on the intensity and completeness of the mental absorption.
absorbed in contemplation
Emphasizes the act of actively thinking and reflecting.
engrossed in reflection
Suggests a deeper, more profound level of thinking.
contemplating deeply
Highlights the act of considering something thoughtfully and thoroughly.
deep in reverie
Implies a pleasant, dreamlike state of contemplation.
in a world of one's own
Emphasizes detachment from the external environment.
musing over something
Suggests a gentle, thoughtful pondering.
brooding
Implies a more somber and intense contemplation.
daydreaming
Indicates a wandering, often fanciful, train of thought.
FAQs
How can I use "lost in thought" in a sentence?
You can use "lost in thought" to describe someone who is deeply absorbed in their own thoughts and unaware of their surroundings. For example, "She sat by the window, "lost in thought", as the rain fell outside."
What's a good alternative to "lost in thought"?
Alternatives include "preoccupied with one's thoughts", "absorbed in contemplation", or "deep in reverie", depending on the specific nuance you want to convey.
Is it correct to say "became lost in thought"?
Yes, "became lost in thought" is a correct and natural way to express the process of someone entering a state of deep contemplation. It indicates a transition into being "lost in thought".
What is the difference between "lost in thought" and "daydreaming"?
"Lost in thought" generally implies a more focused and deliberate contemplation, while "daydreaming" suggests a more whimsical and unfocused wandering of the mind.
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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
4.8/5
Expert rating
Real-world application tested