contagiousness

/kənˈteɪdʒəsnəs/
noun
  1. The quality of being able to spread from one person to another, especially of a disease.
    • Doctors studied the contagiousness of the new virus to determine how to control it.
    • The contagiousness of the flu means it can quickly spread through a school.
    • Because of its high contagiousness, the illness required immediate quarantine measures.
  2. The quality of spreading easily from person to person, such as an emotion, behavior, or idea.
    • Social media can increase the contagiousness of a trend or a rumor.
    • The contagiousness of her laughter made everyone in the room smile.
    • The contagiousness of the team's enthusiasm inspired the whole company.
What does "contagiousness" mean? | whatsthatwordmean | whatsthatwordmean