I'm surprised that bareword came up as most unpopular. I know for a fact that there are a million and two Perl programmers that use unquoted strings when it comes to hashes and lists. This makes me wonder if perhaps using => as a comma operator and unquoted hash keys are not generally considered barewords. Example follows of course.
#!perl -w
use strict;
my %en2fr = (
one => 'un',
two => 'deux',
three => 'trois'
);
# yes I realize there are better ways to grab the
# hash values, this is for demonstration only :)
print join(
', ', $en2fr{one}, $en2fr{two}, $en2fr{three}
), $/;