balls-out

adjective
\ ˈbȯlz-ˌau̇t How to pronounce balls-out (audio) \

Definition of balls-out

1 often vulgar : all-out, full-out
2 often vulgar : boldly aggressive or competitive

First Known Use of balls-out

circa 1945, in the meaning defined at sense 1

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The first known use of balls-out was circa 1945

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not to be persuaded, moved, or stopped

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