1. Struck with fear, dread, or consternation
   - appalled, dismayed, shocked

See also: afraid, 'fraid [non-standard]

• arse about
• arse around
• arse-licker
• arsehole
• arsenal
• arsenate
• arsenic
• arsenic acid
• arsenic group
• arsenic trioxide
• arsenical
• arsenide
• arsenious
• arsenite
• arsenopyrite
• arsenous anhydride
• arsenous oxide
• arsey
• arsine
• arsis
• arson
• arsonist
• art
• art class
• art collection