Definitions

1. noun

A person who holds extreme or uncompromising views, especially on a particular issue or policy.

“The government’s stance on the issue has alienated some of its hardliners, who are now calling for more drastic measures.”

2. noun

A person who insists on maintaining strict rules or standards in a particular situation.

“The hardliner on the committee refused to budge on the proposal, insisting that it was the only way to achieve their goals.”