frighten away vs scare off

frighten away and scare off both are verbs.

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

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

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

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

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