exorcise[verb]Synonyms: drive out, cast out, deliver (from), expel, purify 
 [TahlilGaran] English Synonym Dictionary ▲
 ex‧or‧cize (
also exorcise British English) /ˈeksɔːsaɪz $ -ɔːr-/
 verb [transitive]1.  to force evil 
spirits to leave a place by using special words and ceremonies
2.  to make yourself forget a bad memory or experience: 
 trying to exorcise the past
 trying to exorcise the past  [TahlilGaran] Dictionary of Contemporary English ▲