Asymptomatic (adjective)

Not having or showing any symptoms of a disease or condition.

Origin:

From greek ἀ- (a-), meaning "not" and σύμπτωμα (sýmptōma), meaning "a falling together, a symptom".

Examples:

1. The patient was asymptomatic but tested positive for the virus.
2. Asymptomatic carriers can still spread the disease.
3. The cancer was asymptomatic until it was in advanced stages.
4. Asymptomatic hypertension is often referred to as "silent killer" because of lack of symptoms.
5. Asymptomatic patients are not usually treated, but monitored for changes.