The term 'Sudden Terror' can be broken down into two words, 'FRIGHT' and 'PANIC'. 'FRIGHT' is a six-letter word that means an intense fear or horror, usually caused by something unexpected. 'PANIC' is a five-letter word that means a sudden overwhelming fear that causes one to act irrationally or without thinking. Together, these two words describe a sudden, intense fear or terror that can cause someone to act without thinking.