有頭有尾 [ㄧㄡˇ ㄊㄡˊ ㄧㄡˇ ㄨㄟˇ; you3 tou2 you3 wei3] where there's a start, there's a finish (idiom); to finish once one starts sth to carry things through I started, so I'll finish. ◄ ►