(a.) Without sense; unmeaning; absurd; foolish; irrational; preposterous.

Pickwickian absurd asinine askew beyond belief bizarre cockamamie crazy dumb extravagant fantastic fool foolish grotesque high-flown idiotic imbecilic incredible irrational laughable loony ludicrous mad meaningless monstrous moronic nutty outrageous outre poppycockish preposterous ridiculous rubbishy screwball screwy senseless silly skimble-skamble stupid trashy twaddling twaddly warped weird wild