The production of this vast undertaking was, however, a slow process.

Building the new army is a vast undertaking, made all the more difficult by the need to fight a violent insurgency at the same time.

It is a vast undertaking at considerable cost and hence a very brave venture in the current economic climate.

"Incredible that such a vast undertaking has gone unnoticed for so long."

The project was, for the time, a vast undertaking, verging on folly according to many critics.

He had the shell - composed of those legitimate companies - to hide his vast undertaking from the world.

Finally, they must be wholly ignorant of the difficulties involved in their vast undertaking.

The next day, with a simple "Okay, let's go" he put the vast undertaking back into gear.

Five years after the start of this scheme, the results of these vast undertakings are beginning to show.

"Don't you think that's sort of a vast undertaking?"