In Avengers: Endgame, Nebula says this:
My father is many things. A liar is not one of them.
I want to know if he never lied to Nebula, or was she just saying that to make sure he doesn't doubt her?
Thanos clearly lied before, for example, when he promised Eitri that he would spare the dwarves if he made the Gauntlet for him, but after he got it he just killed them all!