B1
to use too much of something or use something badly when there is a limited amount of it
Dictionary examples:
My roommate wastes electricity by leaving the fridge open to cool the kitchen. (0.0)
My sister wastes her talent by drawing masterpieces on bananas before eating them. (0.0)
He wasted his gym membership by only using it to take selfies. (0.0)
You waste a lot of water by taking a bath instead of a shower. (32.0)
Don't waste your money on designer jeans. (35.3)
Come on, let's get started - we've wasted enough time already. (39.4)