exclude with regular expression

[fred78980]

What is the regular expression that sees
foobar,barfoo,barbarfoo,foobabarfoo etc. but not words between {}

foobar {worda, wordb, wordc} barfoo {worda, wordb, wordc} barbarfoo
{worda, wordb, wordc} foobarbarfoo

Negation is not suited and I have no idea how to achieve that.

Thanks in advance

 

[Gunnar Hjalmarsson]

What is the regular expression that sees
foobar,barfoo,barbarfoo,foobabarfoo etc. but not words between {}

foobar {worda, wordb, wordc} barfoo {worda, wordb, wordc} barbarfoo
{worda, wordb, wordc} foobarbarfoo
/\b\w*(?:foo|bar)\w*\b/

Negation is not suited

Says who?

 

[Gunnar Hjalmarsson]

What is the regular expression that sees
foobar,barfoo,barbarfoo,foobabarfoo etc. but not words between {}

foobar {worda, wordb, wordc} barfoo {worda, wordb, wordc} barbarfoo
{worda, wordb, wordc} foobarbarfoo

I think I misread the question in my first reply.

$_ = 'foobar {worda, wordb, wordc} barfoo {worda, wordb, wordc}
barbarfoo {worda, wordb, wordc} foobarbarfoo';

my @words = grep defined, /{.*?}|(\w+)/g;