First of all, deployment of these detectors may of course prove frightfully important to the well-being of the Immunity.

It's frightfully important.

The testimony in regard to her scowl was frightfully important; it seemed to hold up her image wholly relieved from the false light of her self-partialities, and so hideous that she dared not look at it.

I think that's frightfully important.

"I used to think it was frightfully important, but now I don't imagine it matters at all."

The youngest, PO Paul Coleman was a tall youth whose fiancée had some frightfully important war job, and beside her all other females paled into insignificance.

When they reached the ground floor and were walking side by side along one of its corridors, Sappha observed nastily: "You must be frightfully important."

I know you're doing frightfully important work.

And somebody told me you were a frightfully important detective from London.

Of course, the darlings exaggerate it all a good deal and make it all sound as though it had been frightfully important.