1.   Soon, the grumblings turned to open discontent.

2.   As soon as they spotted McMullan, their gilded nonchalance turned to open delight.

3.   Initially, the pope seemed ambivalent, but his attitude soon turned to open hostility.

4.   --Take turns to open gifts.

5.   The rivalry turned to open hostility when McAleese got a promotion that Trimble thought should have gone to him.

6.   As his always-slim parliamentary majority crumbled, the infighting turned to open warfare.