reversionist
Speech parts
1. reversionist - Noun
2. reversionist - Adjective
Meaning
someone who lapses into previous undesirable patterns of behavior
Source: WordNetSynonyms
recidivist
backslider
convert
collaborator
repeater
separatist
renegade
deserter
mugwump
traitor
apostate
schismatic
proselyte
turnabout
recreant
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