frighten off vs scare away

frighten off and scare away both are verbs.

Word	Noun	Adjective	Verb	Adverb
frighten off	No	No	Yes	No
scare away	No	No	Yes	No

As verbs, frighten off and scare away are synonyms defined as:

frighten off and scare away: cause to lose courage; to be daunted; to be scared away

Other synonyms of frighten off include dash, daunt, frighten away, pall, scare, scare off.

frighten off (verb)	scare away (verb)
cause to lose courage; to be daunted; to be scared away	cause to lose courage; to be daunted; to be scared away