Adj.

derisive (causing or deserving scorn • The salary they offered me was derisive); farcical; funny; laughable (ridiculous or deserving scorn • Her attempts at drawing were laughable); ragtime; ridiculous; risible; cockamamie; mockable; absurd; cockeyed; derisory (янис из табакерки); ludicrous (Val_Ships); ludicrous; comic; comical

redonkulous (significantly more absurd than ridiculous, to an almost impossible degree Taras); redonkulus (Taras)

ass-inine (игра слов на asinine)

cucumber (используется в переносном смысле, как синоним • His excuse was a complete cucumber DrHesperus)