.../care/attentive(ly)/diligent(ly)/an intention/motive 謹慎;用心深遠;考慮周到:discreetness 別有用心:have an ax to grind 過分謹慎的;過分用心的:overcareful 對...不夠用心...
...bad grade, he will (would) yell at us. But, now I know his discreetness (不懂你用此字要說什麼?) about us. I love you, Dad!