adjective

mad, especially as manifested in wild or aggressive behaviour.

Stella went crazy and assaulted a visitor

mad,insane,out of one’s mind,deranged,demented,not in one’s right mind,crazed,lunatic,non compos mentis,unbalanced,unhinged,unstable,disturbed,distracted,mad as a hatter,mad as a March hare,stark mad,sectionable,mental,off one’s head,out of one’s head,off one’s nut,nutty,nutty as a fruitcake,off one’s rocker,not (quite) right in the head,round the bend,raving mad,stark raving mad,bats,bonkers,cuckoo,loopy,loony,bananas,loco,dippy,screwy,with a screw loose,touched,gaga,not all there,off the wall,out to lunch,not right upstairs,barmy,batty,crackers,barking,barking mad,stark staring mad,doolally,round the twist,off one’s trolley,as daft as a brush,not the full shilling,one sandwich short of a picnic,up the pole,away with the fairies,buggy,nutsy,nutso,out of one’s tree,meshuga,squirrelly,wacko,gonzo,bushed,yarra,porangi

adverb

extremely.

I’ve been crazy busy

noun

a mad person.

keep that crazy away from me