Purchasing clothing that will only be worn once is not very economical.
When they bought a house, the family had to economize to pay their mortgage.
An abstemious way of life is what the old man is fond of.
Be cautious when you approach strangers.
Never very circumspect in expressing his views, Bill annoyed almost everyone at the party.
The irrate customer lost his composure and yelled at the clerk.
A conservative estimate of the cost to repair the car is $100.
You can tell Jane anything; she is very discreet.