- Capable of being passed on from one person or organism to another by close proximity or contact.
- Easily spread by contact.
Late middle english: from latin contagiosus, from contagio "contact, contagion", from con- "with" + tangere "to touch".
- The flu is contagious and can be spread easily from person to person.
- The disease was highly contagious and quickly spread through the population.
- She found out that the rash was contagious and took precautions to avoid spreading it.
- The excitement was contagious and soon everyone was cheering.
- The happiness was contagious and it spread throughout the room.