back out

verbs

move out of a space backwards
"He backed out of the driveway"
back out
is a type of (narrower)
travel backward
"back into the driveway"; "The car backed up and hit the tree"
back
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"
back away, back out, crawfish, crawfish out, pull back, pull in one's horns, retreat, withdraw