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insane: implies that one is unable to function safely and competently in everyday life, and is not responsible for one's actions: adjudged ~ after a period of observation. (adjudge宣判: He was adjudged guilty.他被判有罪)。
mad: strongly suggests wildness, rabidness, ravings, or complete loss of control: drove her husband ~ with jealousy.
crazy: suggests such mental breakdown as comes from old age or may suggest a distraught or wild state of mind induced by intense emotion: ~ with grief; when applied to a scheme, project, or notion, it usually suggests the product of a disordered mind: got those ~ ideas into her head. (distraught心烦意乱)
crazed: often used instead of crazy, implies the existence of temporary disorder,usually with a specific cause: stampeding cattle ~ with fear. (stampede: 奔逃踩踏)
demented: suggests mental unsoundness that manifests itself by apathy, incoherence in thought, speech or action: years of solitary confinement had left him ~.
deranged: stresses a clear loss of mental balance or order resulting in functional disorder: assassinated by a ~ anarchist.
lunatic: may be the equivalent of insane, or may imply no more than extreme folly：invested in one ~ scheme after another.
maniac: is close to mad, and often suggests violence, fury or raving: once behind the wheel, she turns into a ~ driver.
insane: 无法安全正常生活,无法为自己负责，mad: 强烈指示野狂失控，crazy: 精神崩溃、情绪狂野，形容想法计划时表示病态头脑的产物，crazed: 和crazy互换, 表示暂时的失常，常带有原因，demented: 精神不健康，冷漠思维不连贯，deranged: 精神明显失衡无序，导致功能异常，lunatic: 和insane同义，或者仅表示极端愚蠢，m: 和mad相似，表示暴力狂野
记忆方法: 1）IL CMDCMD写成IL2 CMD病态命令<==疯狂失控
2） 疯狂的意思是精神不健康，不能理性思考mean having or showing an unsound mind or being unable to control one's rational processes. | 
