The phrase "absurd aspect" is correct and usable in written English.
It can be used to describe a particular facet or characteristic of something that is ridiculous or nonsensical.
Example: "The absurd aspect of the situation made it difficult for anyone to take the proposal seriously."
Alternatives: "ridiculous facet" or "ludicrous element".
That's the fundamentally absurd aspect of the situation we're in".
Hairy, mud-encrusted men wandering across bleak landscapes eating precious tins of fruit can't help take on an absurd aspect.
I have played a lot of villains, and there's a certain kind of tongue-in-cheek aspect to it, an absurd aspect.
The most absurd aspect of the Knicks' debacle tonight was that only one Heat starter, Eddie Jones, played more than three minutes of the fourth quarter.
Perhaps the most absurd aspect of this project is that fact that it's being waved through while cheaper and cleaner alternatives are being blocked.
There is, of course, a conversation to be had about whether an increasingly diverse Britain has made the old notion of working-class identity redundant, but the numbers still point up an absurd aspect of the new snobbery.
The movie, written and directed by Vidi Bilu and Dalia Hager, is really a study of people coping with excruciating boredom and the absurd aspects of military life.
As Wall Street's influence on corporate America has shrunk, interest in it has drifted to its baser and more absurd aspects.
In the Janet Borden gallery retrospective of Martin Parr's photographs of life in the U.S., taken over the past twenty years, we see the relationship that color has to many of the more absurd aspects of American culture.
It is a nicely humane sense of comedy, that still allows her protagonists room to live and breathe, since Ali never leaves the characters with only their absurd aspects to define them.
With the Arab spring nearly a year old, it's impossible for Baron Cohen's new comedy to avoid recalling the more absurd aspects of Muammar Gaddafi's four-decade rule.
