absurd
n.n. completely silly, unreasonable, or impossible to believe. You use it when something makes no sense at all.
n. wildly unreasonable, illogical, or inappropriate. Often used to describe situations that defy common sense or rational thought.
The idea that cats can fly is totally absurd.
It is absurd to expect a single person to finish this entire project in one afternoon.
The play explores the human condition through an absurd series of events that highlight the lack of inherent meaning in the universe.
First attested in 1557. From Middle French absurde, from Latin absurdus (“incongruous, dissonant, out of tune”), from ab (“away from, out”) + surdus (“silent, deaf, dull-sounding”). Compare surd.
Commonly used as a gradable adjective; can be modified by 'completely', 'totally', or 'utterly'.