Synonyms for Absurd (same or very similar meaning)
WordNet sense 1 (a situation in which life seems irrational and meaningless):
the absurdWordNet sense 2 (incongruous;inviting ridicule):
cockeyed, derisory, idiotic, laughable, ludicrous, nonsensical, preposterous, ridiculousWordNet sense 3 (devoid of good sense or judgment):
foolishWordNet sense 4 (lacking in correct logical relation):
illogical, unlogicalFrom the ODE community, based on WordNetadd/edit