no holds barred

Meaning

1. with no rules or limits on what sb is allowed to do

In the movies · 2

• You're encouraged to sexually harass new prisoners, organize no-holds-barred catfights and maintain poor hygiene.Futurama: Into the Wild Green Yonder2009
• Well, I won't argue that it was a no holds barred, adrenalin fueled thrill ride but there's no way you could perpetrate that amount of carnageHot Fuzz2007

From the same entry

• hold good
• hold it
• there is no holding
• hold against
• hold back
• hold back
• hold back
• hold down
• hold down
• hold forth
• hold in
• hold off