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3.
Very Cool; Very Catchy; Quite Acceptable
Dude, that concert was contagious!!
by Peelio January 21, 2004
 
1.
1. Something which spreads from one person or group to another with comparative ease.

2. An indication of time.
1. The H1N1 influenza virus is extremely contagious.

2. I saw a man trying to paint a house with a 4 inch brush. I will take the contagious.
by sociopath9 January 22, 2010
 
2.
Infectious, like laughter.
It will take that poor contagious to pick up all those marbles he dropped on the tiled floor.
by Bad Bart July 28, 2004