1. disputed or challenged; not accepted by everyone
2. having strong competition between opposing sides
Usage: often used in political or sports contexts

Examples

• The election results were heavily contested by the losing candidate.
• Climate change remains a contested issue among some politicians.
• It was a contested match that went into overtime.
• The ownership of the land has been contested for decades.
• She won the contested primary by only fifty votes.
• The referee’s call was contested by both teams.
• Historical facts about the war are still contested by scholars.