To a very great extent

Usage examples of ever so.

Unaccountably, Ro'moloristen gave the Posleen equivalent of a grin, most unusual for one ever so near to meeting the Demons of Sky and Fire.

The balance of world power had thus been made to shift ever so slightly.

You yourself, sir, I am convinced, in my case, would have done the same: for none ever so sensibly felt the misfortunes of others.

It was--if you'll pardon me for a moment's strange little fantasy--as if I'd gone to stay at some resort, some exquisitely designed and art-directed hotel, placing myself in the hands of past masters of the Sensorial Interface, and had sat down in my room and written a story in ballpoint pen on a yellow legal pad, and when I returned from dinner, discovered that the maid had taken my work away and left behind in its place a quill pen and a stack of fine parchment--explaining that the room looked ever so much finer this way, and it was all part of a routine upgrade.

Seattle and San Francisco and Los Angeles were tiny golden spatters against a velvet darkness ever so faintly silvered with moonlight.

And if, with her congratulations, Sheik Ilderim will accept her gratitude for this other favor done, she will be ever so pleased.