absurdum
n. C2 Proficiency ab·sur·dum
n. a situation or idea that is so silly or unreasonable that it is impossible to believe. It is often used in logic to describe a conclusion that is clearly wrong.
n. a conclusion or situation that is so unreasonable or illogical that it is impossible to accept. Often used in logical arguments to describe a result that is self-contradictory or nonsensical.
The argument led to an absurdum that no one could accept.
If we follow this rule to its logical end, we reach an absurdum where everyone must lie to everyone else.
The philosopher argued that the initial premise was so flawed that it inevitably led to an absurdum, proving the entire theory to be invalid.