thought·ful/`θɔtfəl; ˈθɔːtfəl/ adj 1 serious and quiet because you are thinking about something 认真思考的，沉思的: a thoughtful expression on his face 他脸上凝神思索的表情 2 kind and always thinking of things you can do to make other people happy 体贴的; 周到的: It was very thoughtful of you to come and visit me. 你想得真周到，来看望我。