Foolhardiness is a related term of absurdity.
As nouns the difference between foolhardiness and absurdity
is that foolhardiness
is the quality of being foolhardy while absurdity
is (obsolete|rare) dissonance
The quality of being foolhardy.
(obsolete, rare) Dissonance.
(countable) That which is absurd; an absurd action; a logical contradiction. [ ]
* His travels were full of absurdities . - Johnson
(uncountable) The quality of being absurd or inconsistent with obvious truth, reason, or sound judgment. [ ]
* The absurdity of the actual idea of an infinite number. -
- Neither [Jones] nor I (in 1966) could conceive of reducing our "science" to the ultimate absurdity of reading Finnish newspapers almost a century and a half old in order to establish "priority."