The phrase "absurd behavior" is correct and usable in written English.
It can be used to describe actions or conduct that are unreasonable, illogical, or nonsensical.
Example: "His absurd behavior at the party left everyone feeling uncomfortable and confused."
Alternatives: "ridiculous conduct" or "preposterous actions".
Employing a pinched, nasal French accent of stage stereotype, Mr. Kayden is very funny in her sniffing acceptance of the absurd behavior of her employers.
In a review in The New York Times, Charles Isherwood wrote, "Employing a pinched, nasal French accent of stage stereotype, Ms. Kayden is very funny in her sniffing acceptance of the absurd behavior of her employers".
Pierre is a quietly funny, reactive comedian who relies less on the aggressive insult humor currently in fashion than on an artfully arched eyebrow and a disbelieving look directed at the absurd behavior he sees around him.
The best reality parodies, on the other hand — like "The Comeback" on HBO or, fitfully, "The Office" on NBC — have done the opposite, taking absurd behavior and, with great artifice, making it seem plausible.
Yes, I am going to keep outing these people and their absurd behavior.
Suggestions are offered on what to do and what to avoid doing in this age of fads, quick solutions, and occasional absurd behavior.
Drunk airline passengers are no rarity, and some are prone to absurd behaviors.
She didn't squander her good fortune by absurd childish behavior and was always professional in her craft.
But even as he sat with his gin the behavior seemed absurd to him.
Like a nanny slapping the hand of an importunate charge, Miss Manners checks incipient preening with descriptions of how good intentions have mutated into absurd, cruel or boorish behavior.
For instance, if a woman says "yes" or even feigns sexual enthusiasm in order to keep a knife-wielding attacker from becoming angry and hurting or killing her, it would be absurd to regard her behavior or utterance as consent (or at least as meaningful consent).
