frighten off vs frighten away

frighten off and frighten away both are verbs.

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

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

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

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

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