play hardball

play hardball idiom
Act aggressively and ruthlessly, as in It's only a month before the election, and I'm sure they'll start to play hardball. This term originated in baseball, where it alludes to using the standard ball as opposed to the slightly larger and minimally softer ball of softball. It was transferred to describe aggressive behavior only in the 1970s.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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