Ruffle somebody’s/a few feathers
Definition 1 of 1
Pro Tip 1/3Emotional Impact
This phrase suggests someone's emotions were negatively stirred, often unexpectedly. 
The new policies didn't sit well with employees and certainly ruffled a few feathers.
Pro Tip 2/3Metaphorical Imagery
Imagine a bird's feathers being disturbed - it’s used metaphorically for human reactions. 
He always speaks his mind, even if it means he ruffles someone's feathers.
Pro Tip 3/3Not Always Intended
The phrase can be used when offense is given unintentionally. 
I didn't mean to ruffle any feathers with my comments about the event.
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