Wiktionary
a. momentous; of great import; of great significance, importance or consequence.
WordNet
adj. sufficiently significant to affect the whole world; "earthshaking proposals"; "the contest was no world-shaking affair"; "the conversation...could hardly be called world-shattering" [syn: earthshaking, world-shattering]
Usage examples of "world-shaking".
What Cincinnatus wanted to know more about weren't world-shaking events, and they didn't have anything directly to do with Des Moines, either.
How can one tell friends and acquaintances that one’s great passion, one’s world-shaking romance is no more than a mating dance between ephemerids, that all one’s achievements count to nothing in the face of a biological destiny hoicked up by a runaway Fastigat in a makeshift laboratory on a very minor planet!
How can one tell friends and acquaintances that one's great passion, one's world-shaking romance is no more than a mating dance between ephemerids, that all one's achievements count to nothing in the face of a biological destiny hoicked up by a runaway Fastigat in a makeshift laboratory on a very minor planet!