He would be harder and bigger for longer; a useful effect, since the last thing Julia wanted was a premature end to this game.

The doctors doped him with every medication under the sun, to no useful effect.

But he stressed that such a reduction in tax rates could have a useful effect only if done swiftly.

This can have dramatic effects, both useful and harmful.

The new emergency order could have one useful effect.

The studies did provide evidence that the services could have useful effects on families that might be expected to reduce the risk of child abuse.

Occasional random failures here and there would have a useful effect.

Learned skills differ based on which god the character is worshipping, and have many useful effects.

The dose given in these trials may be far too small to produce any useful effect.

This turns the usual disadvantage of dielectrophoresis into a useful effect.