Choose the word that describes the best antonym (opposite) of the following words.
Futile

Useful

The opposite of futile is useful.

• Futile means producing no useful results.
• Useful means serving a purpose or being of practical value.

The other options are not opposites of futile.

• Waste means using or spending something without achieving a purpose.
• Expensive means costing a lot of money.
• Cheap means costing a relatively small amount of money.