浪费

You're too extravagant with money.

Curtail waste and encourage frugality.

Don't let food go to waste. / Don't waste food.

check extravagance; prevent the dissipation (of)

cause waste

cut down on/reduce waste

combat waste; oppose extravagance

avoid waste

squander natural resources

waste/squander time; fritter/idle away one's time

waste manpower and material resources

waste the prime of one's life

waste one's breath/words

dissipate one's energies/efforts

waste/squander money

waste electricity/water