Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Thesaurus

illness

noun

Synonyms and Antonyms of illness

  1. 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. 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




Learn More about illness


Seen and Heard

What made you want to look up illness? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a timid, meek, or unassertive person

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

reduce soothe perplex disapprove
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ