SAVE ON ENERGY BILLS NO FURTHER A MYSTERY

/dɪˈfileɔlt, ˈdi·fileɔlt/ a failure to perform something that you lawfully need to do, such as fork out a financial debt:in default of formal In default of (= since There is certainly not) any better choice, we will have to proceed with the original prepare.: most efficient of excellent : offering or creating the greatest edge, utility, or pl