徹頭徹尾
1
de cabo a rabo;por completo;íntegramente;de la cabeza a los pies;de los pies a la cabeza;por entero;de principio a fin;de punta a punta
1
thoroughly;through and through;out and out;in every way;from beginning to end;from start to finish
私は徹頭徹尾あなたを支持してきました。
I have supported you throughout.