If you are hesitant about doing something, you do not do it quickly or immediately, usually because you are uncertain, embarrassed, or worried.
例句
She was hesitant about coming forward with her story...她不大愿意站出来讲述自己的经历。His advisers are rightfully hesitant to let the United States be sucked into the conflict.他的顾问们都理所当然地有所犹豫，不愿让美国卷入冲突之中。