If I had to choose one word for my step daughter, it would be 'worthless'. I feel terrible with that thought, but it is the honest truth. She puts out no effort, only does the simplist chores if she is reminded or nagged, and spends 10X as much time on social media as she does on school work. She is not likely to graduate with her class, but hasn't caught on to that fact. To be honest, her mom gave up on her before I did. I'm done though. She doesn't respond to any offers of help or encouragement. She expresses as much gratitude as a trained parrot.