Related Clues:

• Get under one's skin
• Muddy the water
• Foment
• Really irk
• Ruffle some feathers
• Exasperate
• Disquiet
• Steam
• Get in a lather
• Stir up, without a spoon
• Make turbid
• Fire up
• Churn up
• Ruffle one's feathers
• Get one's dander up