Sample sentences for IRRATIONAL

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Definition

not reasonable

More rarely, irrational numbers in mathematics are numbers that cannot be expressed as a fraction consisting of only an integer in the numerator and denominator. For example, pi is an irrational number while 1/3 is rational.

I have an irrational fear of spiders.

irrational = unreasonable

It is as irrational to place too much faith in reason as it is to place too little faith in it.

irrational = unreasonable

The market can stay irrational longer than you can stay solvent.
John Maynard Keynes

irrational = unreasonable

I have an irrational fear of heights.

irrational = unreasonable

Walter's case taught me that fear and anger are a threat to justice; they can infect a community, a state, or a nation and make us blind, irrational, and dangerous.
Bryan Stevenson -- Just Mercy

irrational = unreasonable

Her denial was so complete, so irrational, I realized there was no way I could argue with her.
Rick Riordan -- The Hidden Oracle

irrational = unreasonable (ignoring reason and logic)

That was what worried him, as irrational as it seemed.
James Dashner -- The Death Cure

irrational = unreasonable

And I knew he had done that, not out of any concern for me, but because when he wants something, he gets impatient and irrational about people who make him wait.
Amy Tan -- The Joy Luck Club

irrational = unreasonable

He found that he was often angry, now: irrationally angry at his groupmates, that they were satisfied with their lives which had none of the vibrance his own was taking on.
Lois Lowry -- The Giver

irrationally = in a manner that is unreasonable

Slowly, in mild afternoon sunshine, he walked up a dingy street in the direction of Mr Charrington's shop, keeping one eye open for the patrols, but irrationally convinced that this afternoon there was no danger of anyone interfering with him.
George Orwell -- 1984

irrationally = in a manner that is unreasonable

I'm irrationally concerned she can see my butt through the paper robe.
Rick Yancey -- The 5th Wave

irrationally = in a manner that is not reasonable

But it's an irrational, stupid thought.
Andy Weir -- The Martian

irrational = unreasonable

Instinctive, not irrational.
Neal Shusterman -- Unwind

irrational = unreasonable

An irrational response that somehow would've seemed appropriate.
James Dashner -- The Scorch Trials

irrational = unreasonable

To this day, radical thought was considered left wing, irrational thought was left brain, and anything evil, sinister.
Dan Brown -- The Da Vinci Code

irrational = unreasonable

Humans, I'd noticed, seem to be irrationally fond of dogs, and I could see why a puppy would be easier to cuddle with than, say, a gorilla.
Katherine Applegate -- The One and Only Ivan

irrationally = in a manner that is without reason

Tolerance had turned to distrust and irrational fear.
Jeanne Wakatsuki Houston & James D. Houston -- Farewell to Manzanar

irrational = unreasonable

Admittedly, I have some anxiety problems, but I would argue it isn't irrational to be concerned about the fact that you are a skin-encased bacterial colony.
John Green -- Turtles All the Way Down

irrational = unreasonable

Shortly before he disappeared, Chris complained to Carine that their parents' behavior was "so irrational, so oppressive, disrespectful and insulting that I finally passed my breaking point."
Jon Krakauer -- Into the Wild

irrational = unreasonable

To have positive liberty, he explained, is to take control of one's own mind; to be liberated from irrational fears and beliefs, from addictions, superstitions and all other forms of self-coercion.
Tara Westover -- Educated

irrational = unreasonable

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