back away is a verb meaning "make a retreat from an earlier commitment or activity". It carries one recorded sense.
make a retreat from an earlier commitment or activity
“We'll have to crawfish out from meeting with him”
“He backed out of his earlier promise”
“The aggressive investment company pulled in its horns”
Definitions, synonyms and semantic relations for back away come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.