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
irrational thought
Grammar usage guide and real-world examplesUSAGE SUMMARY
"irrational thought" is a correct and usable phrase in written English.
It is a phrase used to refer to an idea or belief which is not based on sound reasoning. For example, "He had an irrational thought that he could fly without wings."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
baseless assumption
unfounded fear
delusional thinking
faulty reasoning
twisted logic
illogical reasoning
absurd idea
unwarranted fear
groundless fear
needless anxiety
rational fear
baseless apprehension
groundless anxiety
unwarranted worry
unwarranted apprehension
unjustified anxiety
illusory fear
false alarm
false positive
be false positive in
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
19 human-written examples
I had this irrational thought — I thought this was a no-baby building!
News & Media
We were hemming and hawing and we thought, being pretty traumatized, this irrational thought came into my head: Well, we're gonna have to take a photo with me if we go.
News & Media
Compulsions are a response to an obsessive irrational thought.
News & Media
This new model reveals strategic intuition as a form of rational thought in the whole brain, rather than irrational thought on the irrational side of the brain.
Academia
Are we meant to understand that they're "playing" with tone and meaning in order to better exploit the idea of Genet's theatre-as-language? (If Andrews wanted to take the show further he would have had Huppert speaking in French while Blanchett answered in English, the better to play up the idea of rational and irrational thought coexisting).
News & Media
He was seeing the future of thought itself: a time when irrational thought would sweep the land, much as racism had done the previous century, when Washington DC was a blaze of white, the white of a million Ku-Klux Klansmen marching past a Klan-friendly White House and a Klan-friendly Capitol Hill.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
41 human-written examples
He has helped riders control and eliminate irrational thoughts.
News & Media
Rational emotive therapy aims at altering inaccurate or irrational thoughts that lead to negative emotions or maladaptive behaviour.
Encyclopedias
As they take part in these activities, young people develop and maintain irrational thoughts about gambling that may evolve into serious gambling problems.
But Haemi is stricken with dark moods and irrational thoughts that eclipse any chance of happiness for her.
Academia
My wife helps me sort through irrational thoughts and dig deeper to discern the cause of my feelings.
News & Media
Expert writing Tips
Best practice
When describing mental states, pair "irrational thought" with specific examples to clarify the nature and impact of the thought. Instead of simply stating someone had an irrational thought, provide details about what that thought was and how it affected their behavior.
Common error
Avoid labeling a thought as "irrational" simply because you disagree with it. "Irrational thought" implies a deviation from logical reasoning, not merely a difference in opinion or perspective.
Source & Trust
85%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "irrational thought" functions as a noun phrase, where the adjective "irrational" modifies the noun "thought". It describes the quality of a thought as being illogical or not based on reason. Ludwig's examples illustrate its usage in describing human behavior and mental states.
Frequent in
News & Media
33%
Science
33%
Academia
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "irrational thought" is a valid and useful English phrase employed to describe thinking that deviates from logic or reason. Ludwig AI confirms its correctness. While relatively infrequent, as shown by Ludwig's limited examples, it appears across various contexts including news, science, and academia. When writing, ensure you're accurately representing the concept, differentiating true irrationality from mere disagreement. Alternatives like "illogical thinking" or "unreasonable idea" can provide nuance. Understanding its function and typical usage helps to improve writing precision.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
illogical thinking
Focuses on the lack of logical connection in the thought process.
unreasonable idea
Highlights the impracticality and lack of justification behind the idea.
absurd notion
Emphasizes the ridiculous and nonsensical nature of the thought.
baseless assumption
Stresses the lack of evidence supporting the thought.
groundless belief
Indicates that the belief is not founded on facts or reality.
unfounded fear
Highlights the absence of a real threat or danger.
delusional thinking
Suggests a more severe form of irrationality, potentially linked to mental illness.
cognitive distortion
Refers to a systematic pattern of deviation from norm or rationality in judgment.
faulty reasoning
Points to errors in the logical process of arriving at a conclusion.
twisted logic
Implies a deliberate manipulation or misapplication of logic.
FAQs
How can I use "irrational thought" in a sentence?
You can use "irrational thought" to describe beliefs or ideas that aren't based on logic or reason. For instance, "His decisions were often driven by "irrational thought" rather than careful analysis".
What are some synonyms for "irrational thought"?
Alternatives include "illogical thinking", "unreasonable idea", or "absurd notion", each with slight differences in connotation.
How does "irrational thought" differ from "rational thought"?
"Irrational thought" is based on emotion or bias, while "rational thought" is grounded in logic and evidence. One is subjective, the other strives for objectivity.
Is "irrational thought" always a sign of mental illness?
Not necessarily. While persistent "irrational thought" can be a symptom of certain conditions, everyone experiences irrational moments. It's the frequency and impact on daily life that matters.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
85%
Authority and reliability
3.8/5
Expert rating
Real-world application tested