Englishmadwoman
noun
lunatic, maniac, psychotic, psychopath, schizophrenic;
informal loony, nut, nutcase, nutjob, cuckoo, head case, basket case, headbanger, psycho, schizo, crank, crackpot;
British, informal nutter;
Scottish, informal radge;
North American, informal screwball;
US, informal wing nut;
North American, & Australian, New Zealand, informal dingbat.
madwoman Oxford Dictionary of English