smaller person 

The person who is less mature than the opposing person. The person who makes the less mature decision. The moral low-ground.

Doug and Chad were in an argument regarding the superiority of Seinfeld over Friends.

Chad: "Hey, I am sorry we argued, would you like some of my orange which I brought for lunch?"
Doug: "No way, I am choosing to be smaller person and remain offended.

smaller person by ronhsub June 9, 2018