appall (v.)

• abash
• astound
• awe
• confound
• daunt
• discomfit
• disconcert
• disgust
• dismay
• faze
• freeze
• horrify
• nauseate
• offend
• overawe
• paralyze
• petrify
• repel
• revolt
• shake
• shock
• sicken
• stun
• stupefy
• terrify