Set on edge
• Daunt
• Demoralize
• Deprive of fortitude
• Discombobulate
• Dismay
• Faze
• Fluster
• Frazzle
• Frighten
• Get to
• Intimidate
• Psych out
• Rattle
• Ruffle the feathers of
• Shake up
• Take courage from?
• Upset