The phrase "absurd idea" means a thought or concept that is extremely silly or unreasonable.
Sentences with «absurd idea»
The viewer is presented with extremely fragile spaces that are looking both into the past and the future, brimming with absurd ideas, actions, and characters. (artzine.com)
One of the most absurd ideas I've ever heard. (planet3.org)
In hope of being unique, many entrepreneurs come up with absurd ideas that others have no interest in. (inc.com)