illness

1 an abnormal state that disrupts a plant's or animal's normal bodily functioning <suffered from a mysterious illness that left her weak and tired all the time> Synonyms affection, ail, ailment, bug, complaint, complication, condition, disorder, distemper, distemperature, fever, ill, disease, infirmity, malady, sickness, troubleRelated Words contagion, contagious disease; contagium, infection; attack, bout, fit, spell; debility, decrepitude, feebleness, frailness, lameness, sickliness, unhealthiness, unsoundness, unwellness, weakness; malaise, matter, pip; epidemic, pest, pestilence, plagueNear Antonyms fitness, healthiness, heartiness, robustness, soundness, wholeness, wholesomeness; fettle, shapeAntonyms health, wellness

2 the condition of not being in good health <prone to illness as a child, he was sent to a western ranch with the expectation that it would toughen him up> Synonyms sickness, indisposition, unhealthiness, unsoundnessRelated Words malaise, sickishness; affliction, ailment, condition, disease, disorder, dysfunction (also disfunction), malady, trouble, upset; debility, decrepitude, feebleness, frailness, infirmity, invalidism, invalidity, lameness, sickliness, weakliness, weakness; hypochondriaNear Antonyms comeback, convalescence, healing, mending, rally, recovery, recuperation, rehab, rehabilitation, snapback; fettle, fitness, shape; hardiness, heartiness, lustiness, robustness, ruggedness, stamina, strength, toughness, vigor, vigorousness, vitality; bloom, flush, flushness; weal, welfare, well-beingAntonyms health, healthiness, soundness, wellness, wholeness, wholesomeness