infectious

Definitions

Capable of being transmitted by infection, especially from person to person.

Likely to spread or influence others in a rapid manner, such as an emotion or mood.

Examples

Her infectious laughter filled the room and made everyone smile.

The doctor explained that the disease is highly infectious and requires strict quarantine measures.

He has an infectious enthusiasm for music that inspires all of his students.

Synonyms

contagious communicable transmissible catching virulent pestilential spreadable

Antonyms

noncontagious noncommunicable harmless safe sterile sanitary hygienic