Synonyms to brain fag

debility, advanced age, advanced years, adynamia, age of retirement, an incurable disease, anemia, anility, atony, blah feeling, bloodlessness, 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,