Synonyms for Expunging:

n.

expunction (noun)
expunction.
expunging (noun)
erasure, expunction.

v.

obliterating (verb)
striking, cutting, Eliminating, Eradicating, editing, censoring, Canceling, Omitting, Annulling, Expurgating, obliterating, Deleting, Erasing, annihilating.

Other synonyms:

Other relevant words:
erasure, expunction.