The term 'frighten off' can be broken down into three crossword solutions: SCARE (5 letters), DETER (5 letters), and SCAREAWAY (9 letters). The verb 'frighten off' means to cause someone or something to flee in fear, usually by making a loud noise or displaying threatening behavior. The solution SCARE is a verb meaning to cause fear or terror in someone or something. The solution DETER is a verb meaning to discourage someone from doing something by making them fear the consequences. The solution SCAREAWAY is a verb meaning to cause someone or something to flee in fear.