1. filled with shock, horror, or amazement
Usage: often used with ‘at’

Examples

• She stood aghast at the destruction caused by the storm.
• The students were aghast when they heard about the pop quiz.
• He was aghast at the enormous bill for dinner.
• The audience sat aghast as the magician’s trick went wrong.
• Parents were aghast at the school’s decision to cancel the program.
• I was aghast to discover that my car had been stolen.