This doesn't work It gives me the warning "Use of uninitialized value at test.pl line 16, <STDIN> chunk 1."

@words=qw(
    fred  camel
    barney  llama
    betty  alpaca
    wilma  alpaca
);
print "What is your name?\n";
$name=<STDIN>;
chomp ($name);
if ($name eq "Randal")
{
    print "Hello, Randal! Welcome!\n"
} else {
    print "Hello $name.\n";
    $secretword=$words{$name};       # use {} for hash
    if ($secretword eq ""){          # gives me an error around here
        $secretword="stupid";      #default secret word 
    }
    print "What is the secret word?";
    $guess =<STDIN>;
    chomp($guess);
    while ($guess ne $secretword){
        print "Wrong, try again.\n";
        $guess=<STDIN>;
        chomp ($guess);
    }
}
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Help please! alvarr3