彻头彻尾 chètóu-chèwěi

(1) [out and out;through and through;complete;from claw to the caring;head over heels]∶从头到尾

那样彻头彻尾地牟利,那样直言不讳的贪婪,关于它没什么好说的

(2) [downright;dyed-in-the-water;outright]∶不折不扣

分明是彻头彻尾的废话