symptom

noun

symp·​tom ˈsim(p)-təm 

1

a

: subjective evidence of disease or physical disturbance

broadly : something that indicates the presence of bodily disorder

b

: an evident reaction by a plant to a pathogen

2

a

: something that indicates the existence of something else

symptoms of an inner turmoil

b

: a slight indication : trace

symptomless

ˈsim(p)-təm-ləs 

adjective

Choose the Right Synonym for symptom

sign, mark, token, note, symptom mean a discernible indication of what is not itself directly perceptible.

sign applies to any indication to be perceived by the senses or the reason.

encouraging signs for the economy

mark suggests something impressed on or inherently characteristic of a thing often in contrast to general outward appearance.

a mark of a good upbringing

token applies to something that serves as a proof of something intangible.

this gift is a token of our esteem

note suggests a distinguishing mark or characteristic.

a note of irony in her writing

symptom suggests an outward indication of an internal change or condition.

rampant crime is a symptom of that city's decay

Examples of symptom in a Sentence

Recent Examples on the Web

The Chinese scientist added that his research also extends to medical imaging, where AI models are trained on vast datasets to identify subtle symptoms such as facial puffiness, swelling, or discoloration that may signal disease. —Bojan Stojkovski, Interesting Engineering, 11 Oct. 2025

The shutdown is the most acute symptom of a general lack of goodwill on Capitol Hill, where bipartisan deal-making has increasingly gone out of vogue. —Steven T. Dennis, Fortune, 11 Oct. 2025

No autopsy was conducted, and relatives later told authorities his symptoms resembled poisoning by strychnine, a powerful and deadly toxin. —Christina Coulter, PEOPLE, 11 Oct. 2025

Zverev was up to date on his Covid tests, and players were supposed to report symptoms to tournament officials. —Matthew Futterman, New York Times, 11 Oct. 2025

Word History

Etymology

Late Latin symptomat-, symptoma, from Greek symptōmat-, symptōma happening, attribute, symptom, from sympiptein to happen, from syn- + piptein to fall — more at feather

First Known Use

1541, in the meaning defined at sense 1a

Phrases Containing symptom

• MSG symptom complex
• somatic symptom disorder

Kids Definition

symptom

noun

symp·​tom ˈsim(p)-təm 

1

: a change in a living thing that indicates the presence of a disease or other physical disorder

especially : one (as a headache) that can be felt or sensed only by the individual affected

2

: something that shows that something else exists : indication

symptomless

-ləs 

adjective

Medical Definition

symptom

noun

symp·​tom ˈsim(p)-təm 

: subjective evidence of disease or physical disturbance observed by the patient

headache is a symptom of many diseases

visual disturbances may be a symptom of retinal arteriosclerosis

broadly : something that indicates the presence of a physical disorder compare sign sense 2