shadowbox

[shad-oh-boks]
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verb (used without object)

to make the motions of attack and defense, as in boxing, as a training or conditioning procedure.
to evade or avoid direct or decisive action.

Origin of shadowbox

First recorded in 1915–20; shadow + box2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Contemporary Examples of shadowbox