my $regex=qr{(?:(?:\Q$nameOne\E).*(?:\Q$nameTwo\E)|(?:\Q$nameTwo\E).*(?:\Q$nameOne\E))}; if ($text !~ $regex) { print "$name\n"; ++ct; } #### use Benchmark; $n1='h'; $n2='e'; $r=qr{(?:(?:\Q$n1\E).*(?:\Q$n2\E)|(?:\Q$n2\E).*(?:\Q$n1\E))}; @i=qw(hello how are you doing are you going to exit now? each time?); timethese (10000, { var=> sub { for $w (@i) { $ct1++ if ($w!~$r); } }, and => sub { for $w (@i) { $ct2++ if ($w!~ m/\Q$n1\E/ or $w !~ m/\Q$n2\E/); } } }); print "$ct1, $ct2\n";