fall back
verb.
fall backwards and down
verb.
hang (back) or fall (behind) in movement, progress, development, etc.
verb.
move back and away from
The enemy fell back
verb.
retreat
verb.
have recourse to
The government resorted to rationing meat
Synonym: recur, resort
verb.
go back to bad behavior
Those who recidivate are often minor criminals
Antonym: gain