"The first time in my life I've felt completely invulnerable," she says.

It was a formidable task, but Sean felt optimistic and invulnerable.

And if nations feel invulnerable to attack, they might be tempted to launch a first strike.

Now that he had his knife back he felt invulnerable.

For some reason, you feel invulnerable when a hired driver is behind the wheel.

While we may fear certain illnesses, we usually feel fairly invulnerable.

If we stay within the bounded area, we feel invulnerable.

A country that felt invulnerable now wonders if, where, and when the next attack will come.

We always felt invulnerable to the economic pressures on the rest of the country, but that's no longer true.

I would say that in a lot of cases they feel pretty invulnerable while they're out there.