There's so much truth in this world that lies become unnecessary.

But with the advent of the nuclear-powered submarine, snorkeling had become unnecessary.

There were more than enough people about to thwart my escape and in any event it had become unnecessary.

Many of the preservation techniques used in different cultures have since become unnecessary but are still performed for their resulting taste and texture when consumed.

The monitoring system became unnecessary and was closed on April 25, 1982.

Since his encounter with the empress plant, the words had become unnecessary; he was able to convey his meaning by thought alone.

By that point, affirmative action may have become unnecessary and discontinued.

But it might be that men are winding down and becoming unnecessary.

Sometimes, breaking the ties of cross-subsidies makes sense because they have become wasteful or unnecessary.

It meant that The Shadow's efforts had suddenly become unnecessary.