Debility

n.

1.

The state of being weak; weakness; feebleness; languor. The inconveniences of too strong a perspiration, which are debility, faintness, and sometimes sudden death. - Arbuthnot.

Noun

1.

debility - the state of being weak in health or body (especially from old age) Synonyms: feebleness, frailness, frailty, infirmity

advanced age, advanced years, adynamia, age of retirement, an incurable disease, anemia, anility, atony, blah feeling, bloodlessness, brain fag, cachexia, cachexy, caducity, chronic ill health, cowardice, debilitation, decline of life, declining years, decrepitude, delicacy, delicate health, disease, dotage, dullness, eld, elderliness, enervation, enfeeblement, etiolation, exhaustion, eyestrain, faintness, fatigue, feebleness, flabbiness, flaccidity, fragility, frailty, goneness, green old age, hale old age, healthlessness, heart strain, hoary age, hypochondria, hypochondriasis, ill health, impotence, infirm old age, infirmity, infirmity of age, invalidism, invalidity, jadedness, languishing, languishment, languor, lassitude, listlessness, longevity, malaise, mental fatigue, mental strain, morbidity, morbidness, old age, oldness, overstrain, overtiredness, peakedness, pensionable age, poor health, prostration, ricketiness, ripe old age, second childhood, senectitude, senility, senior citizenship, sickliness, sleepiness, sluggishness, softness, stance fatigue, strain, strengthlessness, superannuation, the downward slope, the golden years, tiredness, unhealthiness, unsoundness, unwholesomeness, vale of years, valetudinarianism, wasting, weakliness, weakness, wearifulness, weariness, white hairs