Wiktionary
vb. (context idiomatic transitive English) To treat#verb, deal with, or act toward (someone) in a morally just, socially honorable fashion.
Usage examples of "do right by".
He just wanted to do right by these people, and he hoped that in turn, they would do right by Earth.
Shes had enough sorrow in her young life, so if you dont mean to do right by her, it would be a kindness if youd leave her alone and haul your ass back up north.
Certainly not to do right by Ramble, a horse already done immeasurable wrong.
He was a true-hearted man, but more wrapped up in his love for my mother than it is well for any man to be who would look at life largely and do right by all.
The only thing written on his heart right now was the old drive to survive, and the new drive to do right by his fallen comrades.
You speak fair an' y' act fair, an' we're joyful when we look forrard to your being our landlord, for we b'lieve you mean to do right by everybody, an' 'ull make no man's bread bitter to him if you can help it.
I don't need the money, but I certainly intend to recommend they do right by the rest of our people.
Sharon, he's been lecturing me on how I've got to do right by Giovanna ever since we left my place, like I couldn't figure out that part by myself.