Todays word: contagious

contagious
adjective
1 describes a disease that can be caught by touching someone with the disease or a piece of infected clothing:
The infection is highly contagious, so don't let anyone else use your towel.

2 describes someone who has a contagious disease:
Keep him off school till he stops being contagious.

3 A contagious feeling spreads quickly among people:
Fear is contagious.