Synonyms to mental fatigue

debility, 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 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,