momentous

It seems amazing that in 2014 that this should be so momentous.

So momentous was the call that Jim Cleve seemed to forget Joan, and she let him go without a word.

Just what the infantry officers should do was a momentous question.

Then immediately followed, as already narrated, the Lewis and Clark expedition with its momentous results.

And it was not at all surprising that such was the case, for it was a most momentous era in our history.

A minute ago they had been occupied in trivial chatter; now they were launched on the momentous topic.