perl -wle '
  my @test = qw(FOO FOOBAR FOO AFOO FOO BARFOO FOOFOO FOO1);
  print "match: $_" for grep { /^(?!FOO$)/ } @test;
'
match: FOOBAR
match: AFOO
match: BARFOO
match: FOOFOO
match: FOO1
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