Definition from macmillandictionary.com
Your browser doesn’t support HTML5 audio
It was a vicious foul, and the referee rightly sent him off.
Everyone is quite rightly concerned about what is going to happen now.
The public is worried, and rightly so.
There is a lot to be done, but as you rightly say, we must move carefully.
He was driving his mum’s car, if I remember rightly.