Synonyms for Reversible (same or very similar meaning)
WordNet sense 1 (capable of being revoked or annulled):
revocable, revokable
WordNet sense 2 (capable of being reversed or used with either side out):
two-sided
WordNet sense 3 (such that alteration is possible; having a marked tendency to change):
changeable, changeful
From the ODE community, based on WordNet
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