contagious

Easily transmitted to others.

Last year's flu strain was so contagious that everybody in town got sick!

Easily passed on to others.

contagious enthusiasm; infectious laughter

Wearing jeans was a contagious fad at that time.

Having a disease that can be transmitted to another person.

They were highly contagious, spreading bacteria to other people.

Contiguous.

In Agypt's land contaygious to the Nile / Old Pharao's daughter went to bathe in style,