morally flexible Share definition Flag Not adhering to a certain set of principles, instead morally adapting to the situation at hand. "When Mary was wealthy, she was against theft, but now that she's poor, she is a thief. I guess she is morally flexible." morally flexible by Catherder March 1, 2017 0 0 Get merch Get the morally flexible mug. Buy Now — $32.95 See more merch