What is another word for frighten off?
Pronunciation: [fɹˈa͡ɪtən ˈɒf] (IPA) 
The phrase "frighten off" means to scare someone away or cause them to avoid a situation. There are many synonyms for this phrase, including "intimidate", "deter", "discourage", "repel", "daunt", "terrify", "spook", "startle", "unsettle", "dishearten", "threaten", "alarm", "shock", "horrify", "petrify", "appall", and "discommode". These words all convey the idea of causing someone to flee or avoid a situation due to fear or intimidation. Whether in a personal or professional setting, knowing these synonyms can help you express yourself more effectively and avoid repetition.
