contagious

adj

1. Easily transmitted to others.

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

2. (figuratively)Easily passed on to others.

   “contagious enthusiasm; infectious laughter”

   “Wearing jeans was a contagious fad at that time.”

   “The taverns of our ancestors would ill bear contrasting with the clubs of to-day; but many a gay midnight was past in the former:—midnights, whose mirth has descended even to us; half the jests, whose gaiety is still contagious; half the epigrams, whose point is yet felt, were born of those brief and brilliant hours.”

   “Cause love is contagious, when it's alright / Love is contagious, when it's alright / Love is alright”

   “One such investigation described how kindness can be contagious.”

3. Having a disease that can be transmitted to another person.

   “They were highly contagious, spreading bacteria to other people.”

4. Contiguous.

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