- a kind of baseball characterized by hard-thrown overhand pitching
- the ball typically used in this game; baseball (sense )
- any ruthless, aggressive, highly competitive form of politics, business, etc.: often in the phrase play hardball
of or characterized by ruthlessness, competitiveness, coercion, etc.: hardball business practices
- Informal The use of any means, however ruthless, to attain an objective.
(comparative more hardball, superlative most hardball)