sea change

What he'd said had certainly put her through a sea change.

Thus 1973 saw a sea change in the life of the school.

Perhaps there is no better example of the sea change than in education.

There has also been a sea change in family life.

But no one should expect a sea change in the paper's approach.

The news created a debate about whether a sea change was under way in the art world.

It will lead to sea changes in how we look at live events.

But all this was only part of a cultural sea change.

At the same time, I've gone through a sea change.

For some companies, the shift will be a sea change.