Adjective

(en adjective)

Of a disease, easily transmitted to others.

The flu was so contagious that everybody in town got sick!

Of a fashion, laughter, etc., easily passed on to others.

Wearing jeans was a contagious fad at that time.

Of a person, having a disease that can be transmitted to another person by touch.

They were highly contagious , spreading bacteria to other people.

Adjective

(en adjective)

Marked by heated arguments or controversy.

* {{quote-news

, year=2012 , date=June 19 , author=Phil McNulty , title=England 1-0 Ukraine , work=BBC Sport citation , page= , passage=Ukraine, however, will complain long and hard about a contentious second-half incident when Marko Devic's shot clearly crossed the line before it was scrambled away by John Terry, only for the officials to remain unmoved.}}

Given to struggling with others out of jealousy or discord.