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Longman Dictionary of Contemporary English
earth-shattering
adjective
EXAMPLES FROM OTHER ENTRIES
▪ Being diagnosed with cancer was an earth-shattering experience.
EXAMPLES FROM CORPUS
▪ A fortnight after she had made this earth-shattering discovery she was amazed when he stuttered out an invitation to the cinema.
▪ All her consciousness was centred on that unfamiliar and earth-shattering friction.
▪ Beware: if your conclusion contains earth-shattering information, your reader may miss it.
▪ Hardly earth-shattering confessions, I admit.
▪ The computer world was abuzz with rumors of two potentially earth-shattering computers.
▪ The documents were not of earth-shattering significance in themselves, but would help business.
Wiktionary
earth-shattering

a. (alternative spelling of earthshattering English)

Usage examples of "earth-shattering".

She gripped him, struggling to pull him closer, and then suddenly her hips arched, as she thrust herself upon his keenly sensitive horn, and with blinding, earth-shattering clarity, Zarnak felt the burning tip breach her maidenhead, spearing into the depths of her pulsing cunt, her warm blood coating the silver casing of his horn in a scalding, deliciously wet wash of ecstasy.

That the problem solved - a new stabilizer for one of his company's cough syrups - wasn't exactly earth-shattering or in proportion to his euphoria didn't occur to him.