shrug one's shoulders

Idioms  

1. Show indecision or indifference, as in When I asked her if she minded staying home, she just shrugged her shoulders. This redundant idiom— shrug means “to raise and contract the shoulders”—dates from about 1450.

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Example Sentences

One might be tempted to shrug one’s shoulders and say “plus ça change, plus c’est la même chose.”

From Time • Nov. 2, 2016

The simplest way of relief is to shrug one's shoulders and let the weight go.

From The American Mind The E. T. Earl Lectures by Perry, Bliss

Were one of a mocking humor one might shrug one's shoulders; but, in the present state of the Convention, there is no room for anything but fear.

From The French Revolution - Volume 3 by Durand, John