ㄧㄡˇyǒuˇshǐˊㄓㄨㄥzhōng

  1. 開頭結尾比喻做事不能貫徹到底半途而廢詩經··權輿·》:先君舊臣賢者。」晉書··載記》:小人有始無終不能。」虎頭蛇尾有頭無尾善始善終有頭有尾有始有終

to start but not finish (idiom)​; to fail to carry things through, lack of sticking power, short attention span