senilese‧nile /ˈsiːnaɪl/ adjective 
a senile old man She worries about going senile.—senility /sɪˈnɪləti/ noun [uncountable]
WORD ORIGINsenile
Origin:
1600-1700 Latin senilis, from senex; ➔ SENIOR1EXAMPLES FROM OTHER DICTIONARIES
- His lawyers claim he is senile and incompetent to stand trial.
- After those first few chats with his Aunt Emily, Alec soon realised that she was slightly senile.
- Certainly those working with the mentally ill or the handicapped or the senile or in health education may properly think it is.
- He became remote, sulking, even senile possibly.
- I know the old boy was senile.
- In this sense the world would be a better place without mental retardation, madness, and senile dementia.
- Mr Allsopp was known to suffer from senile dementia and was often seen walking in the area.
- Rumors were rampant that the octogenarian was senile and in poor health.
- When the mice are 10 months old they begin, reliably, to get senile.
Longman Language Activatormental illness
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.
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.
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.
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disorder: · There was no evidence of her having a psychiatric disorder, although it was clear that she had become withdrawn since the breakup of her relationship.
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.
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 SETSabscess, 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 ENTRY She worries about going senile.COLLOCATIONS FROM THE CORPUSNOUN
mentally confused or behaving strangely, because of old age: She worries about going senile.· Mr Allsopp was known to suffer from senile dementia and was often seen walking in the area.· In this sense the world would be a better place without mental retardation, madness, and senile dementia.· I've heard there's a link between this condition and senile dementia.· The main gap was in provision for elderly people with senile dementia and for the new long-stay population.· Most studies have investigated senile dementia in relatively small populations.· Alzheimer's Disease was now widely known and recognised as an incurable form of senile dementia.· Maybe he was suffering from premature senile dementia?
a senile old man She worries about going senile.—senility /sɪˈnɪləti/ noun [uncountable]