The phrase "contentious one" refers to something that causes disagreement, argument, or conflict between people. It implies a subject or topic that is likely to spark controversy or heated debate. Full definition
He hits the mark on a lot of contentious issues in our industry, commenting on real estate professionals, mortgage brokers and real estate lawyers. (remonline.com)
The comprehensive financial reform bill is about 600 pages and tackles a number of contentious issues ranging from the leadership structure of key agencies to specific banking regulations. (nreionline.com)
He specialises in contentious matters related to finance, banking, corporate and regulatory law. (eversheds-sutherland.com)