IPA: //əbˈsɜːrdər//
KK: /æbˈsɜrdər/
More ridiculous or unreasonable than something else; describing a situation or idea that is extremely silly or illogical.
The situation became even absurder when the cat started to dance on the table.
Absurder → It is formed from "absurdus" (from Latin, meaning out of tune or irrational) and the comparative suffix "-er" (meaning more). The word "absurder" means more absurd or more irrational than something else.
Think of something that is 'out of tune' or 'irrational' — that's what 'absurd' means, and adding '-er' indicates that it is even more so.