hardened
adj
ˈhɑːdnd
adj
1
hardened criminal/police officer etc
a
criminal,
police
officer
etc
who
has
had
a
lot
of
experience
of
things
that
are
shocking
and
is
therefore
less
affected
by
them
惯犯/老练的警察等
2
become hardened (to sth)
to
become
used
to
something
shocking
because
you
have
seen
it
many
times
（对某事）变得麻木 （无动于衷 ）