craziest Play adjectiveMad, especially as manifested in wild or aggressive behaviour. SYNONYMS as daft as a brushaway with the fairiesbananasbarkingbarking madbarmybatsbonkersbuggybushedcrackerscrazedcuckoodementedderangeddippydistracteddisturbeddoolallygagagonzoinsanelocoloonyloopylunaticmadmad as a hattermad as a March harementalmeshuganon compos mentisnot (quite) right in the headnot all therenot in one's right mindnot right upstairsnot the full shillingnutsonutsynuttynutty as a fruitcakeoff one's headoff one's nutoff one's rockeroff one's trolleyoff the wallone sandwich short of a picnicout of one's headout of one's mindout of one's treeout to lunchporangiraving madround the bendround the twistscrewysectionablesquirrellystark madstark raving madstark staring madtouchedunbalancedunhingedunstableup the polewackowith a screw looseyarra