Behaving in a very good and kind way, like a saint.
Being saintlike is a very good thing, like being a hero.
Examples:
She is very saintlike and always helps others.
The saintlike man gave all his money to the poor.
The saintlike woman forgave everyone who hurt her.
The dog looked at me with saintlike eyes.
He has a saintlike patience, never getting angry.
The saintlike girl saved the cat from the tree.