HARDBALL
hardball
(noun) baseball as distinguished from softball
hardball
(noun) a no-nonsense attitude in business or politics; “they play hardball in the Senate”
Source: WordNet® 3.1
Etymology
Noun
hardball (countable and uncountable, plural hardballs)
(sports) In baseball, a type of ball and baseball game, as opposed to softball.
Tough or ruthless behavior, especially in combat, politics or business.
Adjective
hardball (comparative more hardball, superlative most hardball)
Being or exhibiting tough or ruthless behavior, especially in combat, politics or business.
Source: Wiktionary