n (uncountable) The quality of being absurd or inconsistent with obvious truth, reason, or sound judgment. (defdate|First attested in the early 16th century.)
n (obsolete|rare)dissonance | Dissonance. (defdate|Attested from around 1350 to 1470 until the late 17th century.)
n (countable) That which is absurd; an absurd action; a logicalcontradiction. (defdate|First attested in the late 15th century.)