An alliance may be entered voluntarily before the start of the game.

Both sides must enter into the transaction voluntarily and in good faith.

A girl who, before his eyes, is violating an engagement voluntarily entered into with another man!

I hadn't voluntarily entered prison in order to win a popularity contest.

After the tour ended, Jackson voluntarily entered a rehabilitation program.

He suffered a breakdown and voluntarily entered a mental hospital.

If insurers did not voluntarily enter a particular market, the government could offer financial incentives to draw them in.

Nevertheless, he entered voluntarily, crawling on his stomach into the heart of the main fire.

"It was not a bed I would enter voluntarily."

Other school principals voluntarily entered into the program, and by 1917, the organization was established statewide.