1. baseball, as distinguished from softball. adjective
2. tough or ruthless: He wasn't ready for the hardball politics of Washington.
3. outspoken, challenging, or difficult: Reporters asked the president some hardball questions. Idioms
4. play hardball, to act or work aggressively, competitively, or ruthlessly, as in business or politics.
"tactics can be hardball."
"people/places/organizations can be hardball."
"politicses can be hardball."
"presidents can be hardball."
"people can be hardball."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.