insanityin‧san‧i‧ty /ɪnˈsænəti/ noun [uncountable] 
Examples
The court acquitted Campbell on the grounds of temporary insanity.2very stupid actions that may cause you serious harm SYN lunacy: Can’t they see the insanity of dumping radioactive waste in the sea?
ExamplesEXAMPLES FROM OTHER DICTIONARIES
Thesaurus- Brennan blames her actions on temporary insanity.
- Hearing voices inside your head is a common symptom of insanity.
- Hodge was found not guilty by reason of insanity.
- It was sheer insanity to try to drive through the mountains in that thunderstorm.
Longman Language Activatormental illness► mental illness
Collocations an illness of the mind: · Depression is a mental illness and can often be treated with drugs.· He had a history of mental illness and alcoholism.suffer from (a) mental illness: · SANELINE is the first helpline for people suffering from mental illness.
► madness especially British serious and permanent mental illness - used especially in literature, but not used in official or medical contexts: · By the end of the book, Peter's addiction has led him to madness and suicide.feign madness (=pretend to be mad): · Some prisoners feigned madness so that they would be released.
► insanity formal serious and permanent mental illness - use this especially in legal contexts or in descriptions of people who lived in the past: · Hearing voices inside your head is a common symptom of insanity.· Hodge was found not guilty by reason of insanity.
► disorder formal a mental illness - used especially by doctors: personality/mood disorder: · Children who suffer from personality disorders often receive little or no treatment until it's too late.psychiatric/mental disorder: · There was no evidence of her having a psychiatric disorder, although it was clear that she had become withdrawn since the breakup of her relationship.
► depression a mental illness which makes you so anxious and unhappy that you cannot live a normal life: suffer from depression: · He has been suffering from depression since his wife died last year.deep/severe depression: · She suffers from periods of deep depression, when she locks herself away and will speak to no one for weeks.
► senility a mental illness that affects old people and makes them unable to think clearly and become confused very easily : · Of all the associated problems to do with getting old, senility is the one she dreads most.
WORD SETS► Illness & Disabilityabscess, nounache, verbache, nounacne, nounagoraphobia, nounagoraphobic, nounague, noun-aholic, suffixAIDS, nounailment, nounairsick, adjectivealbino, nounalcoholic, nounalcoholism, nounallergic, adjectiveallergy, nounamnesia, nounamputee, nounanaemia, nounanaemic, adjectiveangina, nounanorexia, nounanorexic, adjectiveantacid, nounanthrax, nounantibody, nounantidepressant, nounantidote, nounantigen, nounantihistamine, nounanti-inflammatory, adjectiveantitoxin, nounapoplectic, adjectiveapoplexy, nounappendicitis, nounarteriosclerosis, nounarthritis, nounaseptic, adjectiveaspirin, nounasthma, nounastigmatism, nounasymptomatic, adjectiveathlete's foot, nounatrophy, verbauto-immune disease, nounAyurvedic medicine, nounbaby blues, nounbacillus, nounbackache, nounbark, verbbattle fatigue, nounBCG, nounbedridden, adjectivebedsore, nounbed-wetting, nounbellyache, nounbenign, adjectiveberiberi, nounbespectacled, adjectivebetter, adjectivebilious, adjectivebinge, verbbiopsy, nounbirthmark, nounbite, verbbite, nounblack and blue, adjectiveBlack Death, the, black eye, nounblackout, nounbleed, verbbleeding, nounblind, verbblister, nounblister, verbblood bank, nounblood donor, nounblood poisoning, nounbloodshot, adjectiveblood transfusion, nounbloody, adjectivebloody, verbblue baby, nounboil, nounbotulism, nounbrain damage, nounbreakdown, nounbronchitis, nounbruise, nounbruise, verbBSE, nounbubonic plague, nounbug, nounbulimia, nounbump, nounbunion, nounbuzz, verbcalloused, adjectivecallus, nouncancer, nouncandida, nouncanker, nouncarbuncle, nouncarcinogen, nouncarcinogenic, adjectivecarcinoma, nouncardiac, adjectivecardiovascular, adjectivecaries, nouncarpal tunnel syndrome, nouncarrier, nouncarry, verbcarsick, adjectivecast, nouncasualty, nouncataract, nouncatarrh, nouncatatonic, adjectivecatching, adjectivecauliflower ear, nouncerebral palsy, nouncertify, verbcervical smear, nounchapped, adjectivecharley horse, nounchemotherapy, nounchesty, adjectivechicken pox, nounchilblains, nounChinese medicine, nouncholera, nounchronic, adjectivecirrhosis, nounCJD, nouncleanse, verbcleft palate, nounclinic, nounclinical, adjectiveclub foot, nouncold, nouncold sore, nouncolic, nouncolitis, nouncollapse, verbcolour-blind, adjectivecoma, nouncommon cold, nouncommon denominator, nouncommunicate, verbcomplaint, nouncomplicate, verbcomplication, nouncompound fracture, nounconcuss, verbconcussion, nouncondition, nouncongenital, adjectivecongested, adjectiveconjunctivitis, nounconstipation, nounconsumption, nounconsumptive, nouncontagion, nouncontagious, adjectivecontinent, adjectivecontract, verbcontusion, nounconvalesce, verbconvulsion, nouncorn, nouncortisone, nouncot death, nouncough, nounCPR, nouncrack-up, nouncramp, nounCreutzfeldt-Jakob disease, nouncrick, nouncrick, verbcripple, nouncripple, verbcross-eyed, adjectivecroup, nouncurable, adjectivecut, nouncyst, nouncystic fibrosis, nouncystitis, noundecompression sickness, noundeep vein thrombosis, noundeformity, noundegenerative, adjectivedehydrate, verbdelirious, adjectivedelirium, noundelusion, noundementia, noundengue fever, noundepression, noundermatitis, noundiabetes, noundiabetic, adjectivediabetic, noundiagnosis, noundialysis, noundiaper rash, noundiarrhoea, noundiphtheria, noundisability, noundisable, verbdisabled, adjectivedischarge, verbdisease, noundisgorge, verbdislocate, verbdisorder, noundissipated, adjectivedissipation, noundistemper, noundistend, verbdizzy, adjectivedoddering, adjectivedoddery, adjectivedonate, verbdonor, noundouble vision, noundoughy, adjectivedown, adverbDown's syndrome, noundrawn, adjectivedressing, noundrinker, noundrunk, adjectivedrunk, noundrunken, adjectivedull, adjectivedumb, adjectiveDVT, noundysentery, noundyslexia, noundyspepsia, noundyspeptic, adjectiveearache, nouneating disorder, nounEbola, nounectopic pregnancy, nouneczema, nounemaciated, adjectiveemasculate, verbembolism, nounemphysema, nounencephalitis, nounendoscope, nounenervate, verbenteritis, nounepidemic, nounepilepsy, nounepileptic, adjectiveepileptic, nounetiology, nounexcruciating, adjectiveexposure, nouneyeless, adjectiveeye strain, nounfail, verbfaint, nounfester, verbfever, nounfever blister, nounfevered, adjectivefeverish, adjectivefirst aid, nounfit, nounflat feet, nounflat-footed, adjectiveflu, nounfood poisoning, nounfoot and mouth disease, nounfracture, verbfracture, nounfrostbite, noungall, noungammy, adjectiveganglion, noungangrene, noungas, noungash, noungastric, adjectivegastritis, noungastroenteritis, nounGerman measles, nounget, verbgingivitis, nounglandular fever, nounglaucoma, noungnarled, adjectivegonorrhea, noungout, noungrand mal, noungraze, verbgraze, noungriping, adjectivegroggy, adjectivegrowing pains, noungrowth, noungush, verbgynaecology, nounhacking cough, nounhaemophilia, nounhaemophiliac, nounhaemorrhage, nounhaemorrhage, verbhaemorrhoids, nounhalitosis, nounhandicap, nounhandicapped, adjectivehangover, nounhard of hearing, adjectiveharelip, nounhay fever, nounheadache, nounhealth, nounheart attack, nounheartburn, nounheart disease, nounheart failure, nounheat exhaustion, nounheat rash, nounheatstroke, nounheave, verbhepatitis, nounhernia, nounherpes, nounHIV, nounhormone replacement therapy, nounhospital, nounhospitalize, verbhot flush, nounhousebound, adjectiveHRT, nounhump, nounhumpback, nounhunchback, nounhungover, adjectivehydrophobia, nounhypertension, nounhypothermia, nounhysterectomy, nounhysteria, nounhysterical, adjectiveillness, nounimmune, adjectiveimmune system, nounimmunity, nounimmunize, verbimmunology, nounimpacted, adjectiveimpediment, nounimpetigo, nounimpotent, adjectiveincision, nounincontinent, adjectiveincubate, verbincurable, adjectiveindigestion, nounindisposed, adjectiveindisposition, nouninfantile, adjectiveinfantile paralysis, nouninfect, verbinfected, adjectiveinfection, nouninfectious, adjectiveinfirmity, nouninflammation, nouninflammatory, adjectiveinfluenza, nouninfusion, nouningrowing, adjectiveinoculate, verbinoperable, adjectiveinsane, adjectiveinsanity, nouninsomnia, nouninsomniac, nouninstability, nounintensive care, nounintravenous, adjectiveinvalid, nouninvalidity, nouninvasive, adjectiveirregular, adjectiveirritable bowel syndrome, nounirritant, nounirritate, verbirritated, adjectiveirritation, noun-ism, suffixisolation, nounjaundice, nounjaundiced, adjectivejet lag, nounknock-kneed, adjectiveknotted, adjectivelaceration, nounlaryngitis, nounlegionnaire's disease, nounleper, nounleprosy, nounlesion, nounleukemia, nounlisp, nounlisteria, nounliverish, adjectivelockjaw, nounlong-sighted, adjectiveloose, adjectivelozenge, nounlumbago, nounlunacy, nounLyme disease, nounmad cow disease, nounmalady, nounmalaise, nounmalaria, nounmalformation, nounmalignancy, nounmalignant, adjectivemalnourished, adjectivemalnutrition, nounmange, nounmangy, adjectivemania, nounmanic, adjectivemanic depression, nounmastitis, nounME, nounmeasles, nounmedicinal, adjectivemegalomania, nounmegalomaniac, nounmelancholia, nounmelancholic, adjectivemelanoma, nounmend, verbmeningitis, nounmentally handicapped, adjectivemigraine, nounmild, adjectivemiscarriage, nounmole, nounmongol, nounmono, nounmononucleosis, nounmorbid, adjectivemorning sickness, nounmoron, nounmotion sickness, nounmotor neurone disease, nounMRI, nounMRSA, nounMS, nounmultiple sclerosis, nounmumps, nounmurmur, nounmusclebound, adjectivemuscular dystrophy, nounmute, adjectivemute, nounmyopia, nounmyopic, adjectivemyxomatosis, nounnarcolepsy, nounnausea, nounnauseate, verbnauseous, adjectivenearsighted, adjectivenervous breakdown, nounnettle rash, nounneuralgia, nounneurosis, nounneurotic, adjectivenosebleed, nounnotifiable, adjectiveNSU, nounobesity, nounoff-colour, adjectiveoperate, verboperation, nounophthalmic, adjectiveophthalmology, noun-osis, suffixosteoarthritis, nounosteopathy, nounosteoporosis, nounoutpatient, nounoverbite, nounpacemaker, nounpaediatrics, nounpale, adjectivepallid, adjectivepallor, nounpalpitate, verbpalpitations, nounpalsy, nounpandemic, nounparalyse, verbparalysed, adjectiveparalysis, nounparalytic, adjectiveparalytic, nounparanoia, nounparaplegia, nounparaplegic, nounparasitic, adjectiveParkinson's disease, nounparoxysm, nounpasty, adjectivepasty-faced, adjectivepathogen, nounpathological, adjectivepathology, nounpeaked, adjectivepeaky, adjectivepellagra, nounpeptic ulcer, nounperforated, adjectiveperiod pain, nounperitonitis, nounpernicious anaemia, nounpersecution complex, nounpestilence, nounpestilential, adjectivepetit mal, nounpharyngitis, nounphlebitis, nounphlegm, noun-phobic, suffixphysiotherapy, nounpigeon-toed, adjectivepins and needles, nounplacebo, nounplague, nounplaque, nounplaster cast, nounpleurisy, nounPMS, nounPMT, nounpneumonia, nounpockmark, nounpockmarked, adjectivepoisoning, nounpolio, nounpolyp, nounpoor, adjectivepost-traumatic stress disorder, nounpremenstrual tension, nounprescribe, verbprescription, nounpreventive medicine, nounprickle, verbprickly heat, nounprognosis, nounprolapse, nounprophylactic, adjectiveprophylactic, nounprophylaxis, nounpsoriasis, nounpsychopath, nounpsychosis, nounpsychosomatic, adjectivepsychotic, adjectivepuffy, adjectivepull, verbpurulent, adjectivepus, nounpustule, nounqueasy, adjectiverabid, adjectiverabies, nounradiation sickness, nounradiography, nounrash, nounraw, adjectivereact, verbreaction, nounreceive, verbrecuperate, verbrecuperative, adjectiveregurgitate, verbrelapse, verbremission, nounrepetitive strain injury, nounresistance, nounrespond, verbretch, verbRhesus factor, nounrheumatic, adjectiverheumatic fever, nounrheumatism, nounrheumatoid arthritis, nounrickets, nounringworm, nounRSI, nounrubella, nounrun-down, adjectiverunny, adjectiverupture, nounsaddle-sore, adjectivesalmonella, nounscab, nounscabby, adjectivescabies, nounscald, verbscald, nounscaly, adjectivescar, nounscar, verbscarlet fever, nounschizophrenia, nounsciatica, nounsclerosis, nounscrape, verbscrape, nounscratch, nounscurvy, nounseasick, adjectiveseizure, nounself-examination, nounsenile, adjectivesenile dementia, nounsenseless, adjectivesepsis, nounseptic, adjectivesepticaemia, nounserum, nounset, verbsexually transmitted disease, nounshell shock, nounshell-shocked, adjectiveshingles, nounshock, nounshort-sighted, adjectivesickle-cell anaemia, nounsickly, adjectivesickness, nounside effect, nounsightless, adjectivesimple fracture, nounsleeping sickness, nounslipped disc, nounsmallpox, nounsnakebite, nounsnow blindness, nounsore, adjectivesore, nounspastic, adjectivespecial needs, nounspecimen, nounspina bifida, nounsprain, verbsputum, nounsquint, verbsquint, nounstammer, nounstarvation, nounstarve, verbSTD, nounstomachache, nounstone, nounstrain, nounstrain, verbstrangulated, adjectivestrep throat, nounstroke, nounsty, nounsuccumb, verbsufferer, nounsunstroke, nounsuperbug, nounsurgical, adjectiveswelling, nounswollen, adjectivesymptom, nounsymptomatic, adjectivesyndrome, nounsyphilis, nounTB, nountear, verbtetanus, nountherapeutic, adjectivetherapy, nounthrombosis, nounthrush, nountic, nountight, adjectivetingle, verbtinnitus, nountipsy, adjectivetonsillitis, nountoothache, nountorment, nountourniquet, nountoxaemia, nountoxic shock syndrome, nountraction, nountransfusion, nountrauma, nountravel sickness, nountreatment, nountremor, nountuberculosis, nountumour, nountunnel vision, nountwinge, nountwitch, nountyphoid, nountyphus, nounulcer, nounulcerate, verbultrasound, noununderweight, adjectiveundressed, adjectiveunhealthy, adjectiveuntreated, adjectivevaccinate, verbvaccine, nounvaricose veins, nounVD, nounvenereal disease, nounverruca, nounvertigo, nounviral, adjectivevirology, nounvirulent, adjectivevomit, verbvomit, nounwart, nounweak, adjectiveweal, nounweep, verbwheeze, verbwheeze, nounwheezy, adjectivewhiplash, nounwhooping cough, nounwind, nounwithered, adjectivewound, nounwrench, verbwriter's cramp, nounyaws, nounyeast infection, nounyellow fever, noun
COLLOCATIONS FROM THE CORPUSNOUN► defense
Phrases· The judge will quiz jurors individually about their views on abortion and the insanity defense beginning Tuesday.
VERB► plead· He attempted to plead insanity, but did it so effectively that they concluded he must be sane.
PHRASES FROM OTHER ENTRIES► plead ignorance/illness/insanity etc
1the state of being seriously mentally ill, so that you cannot live normally in society SYN madness: - As to his reference to rugby league, I plead ignorance and will not interfere with private griefs.
- Galileo pleaded ignorance of any such document and promised to produce that signed by Bellarrnine in 1616.
- He attempted to plead insanity, but did it so effectively that they concluded he must be sane.
- In Seville he had often pleaded ignorance over some of the expressions she used.
- The next day, she stayed home from work, something she rarely did, pleading illness.
The court acquitted Campbell on the grounds of temporary insanity.2very stupid actions that may cause you serious harm SYN lunacy: Can’t they see the insanity of dumping radioactive waste in the sea?