The phrase "cut frills" is typically associated with eliminating unnecessary expenses or reducing excess. Antonyms for this phrase might include adding frills, splurging, or indulging. These antonyms suggest a willingness to spend more and prioritize luxury or excess, rather than maintaining a lean and efficient lifestyle. Different contexts may require different approaches, and there are valid arguments for both cutting frills and adding them. Ultimately, the right strategy for managing expenses will depend on the specific circumstances and priorities of each individual or organization.