revertible

from WordNet (r) 3.0 (2006)

revertible
    adj 1: to be returned to the former owner or that owner's heirs

from The Collaborative International Dictionary of English v.0.48

Revertible \Re*vert"i*ble\, a.
   Capable of, or admitting of, reverting or being reverted; as,
   a revertible estate.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

25 Moby Thesaurus words for "revertible":
      atavistic, compensatory, indemnificatory, reactionary, recessive,
      recidivist, recidivous, redeeming, redemptional, redemptive,
      regressive, reparative, restitutive, restitutory, restorative,
      retributive, retrograde, retrogressive, retrorse, retroverse,
      returnable, reversible, reversional, reversionary, revulsionary