asymptomatic

adjective

asymp·​tom·​at·​ic ˌā-ˌsim(p)-tə-ˈma-tik 

: not causing, marked by, or presenting with signs or symptoms of infection, illness, or disease

asymptomatic carriers of contagious disease

Acute infection is usually asymptomatic, making early diagnosis difficult.

—Francis V. Chisari

Because gonorrhea is often asymptomatic in women, it can progress painlessly until the result is pelvic inflammatory disease with its sequelae of infertility or ectopic pregnancy.

—Marsha F. Goldsmith

Most patients with gallstones remain asymptomatic for many years and may, in fact, never develop symptoms.

—The Journal of the American Medical Association

Many of the fecal samples positive for Giardia were from asymptomatic pets.

—Lawrence M. Fox

asymptomatically

ˌā-ˌsim(p)-tə-ˈma-ti-k(ə-)lē 

adverb

asymptomatically infected children

The virus may be carried asymptomatically.

Examples of asymptomatic in a Sentence

Recent Examples on the Web

Among children younger than 6, about 70% of infections are asymptomatic. —Rong-Gong Lin Ii, Los Angeles Times, 6 May 2025

During a pair of autopsies to investigate a traffic accident, for example, a 45-year-old man who had been asymptomatic during his life presented evidence of autosomal dominant polycystic kidney disease — a condition that a child has a 50-50 risk of inheriting. —Lauren B. Solberg, Sun Sentinel, 6 May 2025

Though a person infected with the virus may experience unpleasant symptoms, others may be asymptomatic and show no symptoms at all. —Adrianna Rodriguez, USA Today, 29 Apr. 2025

The mother’s infection was asymptomatic, but the virus to spread throughout the population. —Lillian Ali, Smithsonian Magazine, 18 Apr. 2025

Word History

First Known Use

1856, in the meaning defined above

Rhymes for asymptomatic

• adiabatic
• aristocratic
• axiomatic
• diagrammatic
• diaphragmatic
• electrostatic
• endolymphatic
• epigrammatic
• homeostatic
• idiomatic
• magnetostatic
• melodramatic

Kids Definition

asymptomatic

adjective

asymp·​tom·​at·​ic ˌā-ˌsim(p)-tə-ˈmat-ik 

: presenting no signs of disease

Medical Definition

asymptomatic

adjective

asymp·​tom·​at·​ic ˌā-ˌsim(p)-tə-ˈmat-ik 

: not causing, marked by, or presenting with signs or symptoms of infection, illness, or disease

asymptomatic carriers of contagious disease

Decisions regarding the discontinuation of anticoagulation in such patients remain clinically challenging, requiring physicians to weigh the risk of bleeding against the risk of a stroke from asymptomatic arrhythmia.

—Rodney H. Falk, The New England Journal of Medicine

Acute infection is usually asymptomatic, making early diagnosis difficult.

—Francis V. Chisari, Nature

However, 10% to 25% of patients with Barrett's esophagus are completely asymptomatic.

—Scientific American Medicine Bulletin

Red blood cell transfusions for chronic stable anemia in the asymptomatic patient are not clinically beneficial and will unnecessarily increase the patient's risk for infection, immunization to blood antigens, or hemosiderosis.

—The Journal of the American Medical Association

asymptomatically

-i-k(ə-)lē 

adverb

asymptomatically infected adults