wipe sth out
phrasal verb with wipe verb [ T ] IT uk/waɪp/ us
if an increase in the value, level, etc. of something is wiped out, the value, level, etc. goes down to the point where the increase started:
Investors saw their recent gains wiped out by a sudden collapse in the share price.
The advertising group yesterday launched its share issue to wipe out its debts.
to completely destroy something:
The attacks wiped out huge portions of the population.