The state of being weak in health or body (especially from old age).

synonyms: debility, feebleness, frailness, frailty, valetudinarianism.

Roget 160: weakness etc. adj.; debility, atony^†, relaxation, languor, enervation; impotence etc. 158; infirmity; effeminacy, feminality^†; fragility, flaccidity; inactivity etc. 683.    anaemia, bloodlessness, deficiency of blood, poverty of blood.    declension of strength, loss of strength, failure of strength; delicacy, invalidation, decrepitude, asthenia^†, adynamy^†, cachexy^†, cachexia [Med.], sprain, strain.    reed, thread, rope of sand, house of cards.    softling^†, weakling; infant etc. 129; youth etc. 127.    ... show more

Roget 655: disease; illness, sickness etc. adj.; ailing &c.; all the ills that flesh is heir to" [Hamlet]; morbidity, morbosity^†; infirmity, ailment, indisposition; complaint, disorder, malady; distemper, distemperature^†.    visitation, attack, seizure, stroke, fit.    delicacy, loss of health, invalidation, cachexy^†; cachexia [Med.], atrophy, marasmus^†; indigestion, dyspepsia; decay etc. (deterioration) 659; decline, consumption, palsy, paralysis, prostration.    taint, pollution, infection, sepsis, septicity^†, infestation; epidemic, pandemic, endemic, epizootic; murrain, plague, pestilence, pox.    sore, ulcer, abscess, fester, boil; pimple, wen etc. (swelling) 250; carbuncle, gathering, imposthume^†, peccant humor, issue; rot, canker, cold sore, fever sore; cancer, carcinoma, leukemia, neoplastic disease, malignancy, tumor; caries, mortification, corruption, gangrene, sphacelus^†, sphacelation^†, leprosy; eruption, rash, breaking out.    fever, temperature, calenture^†; inflammation.    ague, angina pectoris [Lat.], appendicitis; Asiatic cholera^†, spasmodic cholera; biliary calculus, kidney stone, black death, bubonic plague, pneumonic plague; blennorrhagia^†, blennorrhoea^†; blood poisoning, bloodstroke^†, bloody flux, brash; breakbone fever^†, dengue fever, malarial fever, Q-fever; heart attack, cardiac arrest, cardiomyopathy [Med.]; hardening of the arteries, arteriosclerosis, atherosclerosis; bronchocele [Med.], canker rash, cardialgia [Med.], carditis [Med.], endocarditis [Med.]; cholera, asphyxia; chlorosis, chorea, cynanche^†, dartre [Fr.]; enanthem^†, enanthema^†; erysipelas; exanthem^†, exanthema; gallstone, goiter, gonorrhea, green sickness; grip, grippe, influenza, flu; hay fever, heartburn, heaves, rupture, hernia, hemorrhoids, piles, herpes, itch, king's evil, lockjaw; measles, mumps^†, polio; necrosis, pertussis, phthisis^†, pneumonia, psora^†, pyaemia^†, pyrosis [Med.], quinsy, rachitis^†, ringworm, rubeola, St.    Vitus's dance, scabies, scarlatina, scarlet fever, scrofula, seasickness, struma^†, syntexis^†, tetanus, tetter^†, tonsillitis, tonsilitis^†, tracheocele [Med.], trachoma, trismus [Med.], varicella [Med.], varicosis [Med.], variola [Med.], water qualm, whooping cough; yellow fever, yellow jack.    fatal disease etc. (hopeless) 859; dangerous illness, galloping consumption, churchyard cough; general breaking up, break up of the system.    [Disease of mind] idiocy etc. 499; insanity etc. 503.    martyr to disease; cripple; the halt the lame and the blind;" valetudinary^†, valetudinarian; invalid, patient, case; sickroom, sick-chamber.    [Science of disease] pathology, etiology, nosology^†.    [Veterinary] anthrax, bighead; blackleg, blackquarter^†; cattle plague, glanders^†, mange, scrapie, milk sickness; heartworm, feline leukemia, roundworms; quarter-evil, quarter-ill; rinderpest.    [disease-causing agents] virus, bacterium, bacteria.    [types of viruses] DNA virus; RNA virus.    [RNA viruses] rhinovirus; rhabdovirus; picornavirus.    [DNA viruses] herpesvirus; cytomegalovirus, CMV; human immunodefficiency virus, HIV.    ... show more

Roget 945: vice; evil-doing, evil courses; wrongdoing; wickedness, viciousness etc. adj.; iniquity, peccability^†, demerit; sin, Adam^†; old Adam^†, offending Adam^†.    immorality, impropriety, indecorum, scandal, laxity, looseness of morals; enphagy^†, dophagy^†, exophagy^†; want of principle, want of ballast; obliquity, backsliding, infamy, demoralization, pravity^†, depravity, pollution; hardness of heart; brutality etc. (malevolence) 907; corruption etc. (debasement) 659; knavery etc. (improbity) 940^†; profligacy; flagrancy, atrocity; cannibalism; lesbianism, Sadism.    infirmity; weakness etc. adj.; weakness of the flesh, frailty, imperfection; error; weak side; foible; failing, failure; crying sin, besetting sin; defect, deficiency; cloven foot.    lowest dregs of vice, sink of iniquity, Alsatian den^†; gusto picaresco [It].    fault, crime; criminality etc. (guilt) 947.    sinner etc. 949.    [Resorts] brothel etc. 961; gambling house etc. 621; joint [Slang], opium den, shooting gallery, crack house.    ... show more

Dutch: asthenie, slapte, zwakte
Polish: osłabienie, mizerność, anemiczność, słabość, niemoc