Now he even regretted killing all the rattlesnakes.

"So you think whoever did it regretted killing Ariel?"

He only regretted not killing some, but killing was not his job.

But he did not regret killing the man; he would do it again even though he knew it was wrong.

Captain Gold, I shall very much regret killing you.

"No doubt he'd regret killing you the instant the deed was done, as well."

He's going to regret not killing me when he had the chance.

He did not regret killing the Borg that day.

I do not regret killing that man.

Nor would I regret killing any of those Russians we saw in that office today.