I'm sure you'd never do anything to cause her any unnecessary pain.

It was clear he was trying to save her unnecessary pain, but I had no alternative.

I acted promptly so as to spare him unnecessary pain.

And if the action is swift enough, unnecessary pain can be avoided.

My main aim in this affair is not to cause your mother any unnecessary pain.

You can both save yourselves a lot of unnecessary pain.

How might I approach one without giving unnecessary pain to the other?

As a result, children in the hospital are most likely to suffer unnecessary pain, according to researchers.

It ain't such a bad idea to avoid unnecessary pain, either.

That, I thought, was a little unnecessary pain she had no reason to inflict.