mad
mad/
adjective
1. mentally ill; insane. "he felt as if he were going mad" synonyms: insane, mentally ill, certifiable, deranged, demented, of unsound mind,out of one's mind, not in one's right mind, sick in the head, crazed,lunatic, non compos mentis, unhinged, disturbed, raving, psychotic,psychopathic, mad as a hatter, mad as a March hare; More
verbarchaic
1. make mad or insane.