Nonsensical (5)
'nonsensical' is the definition.
(synonyms)
This is all the clue.
(Other definitions for absurd that I've seen before include "10 18's [SAMUAL BECKETT] style of theatre" , "irrational" , "Quite ridiculous, laughable" , "Really ridiculous, silly" , "Ridiculous, illogical" .)
'nonsensical' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for inane that I've seen before include "Puerile" , "Silly, fatuous" , "Absurd" , "Unintelligent" , "Annie (anag.)" .)
(Other definitions for crazy that I've seen before include "Of unsound mind" , "Insane; very enthusiastic" , "Deranged" , "Lunatic" , "Daft" .)