unsettle
verb (used with object)
to alter from a settled state; cause to be no longer firmly fixed or established; render unstable; disturb.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
How much the recent shenanigans at Twickenham will have unsettled him and his squad is hard to quantify.
From BBC ● Jul. 15, 2011