What does earthshaking mean?
Earthshaking is an adjective used to describe something of tremendous importance, force, or effect — an event, idea, or change powerful enough that it seems to shake the very foundations of the world. Its dominant sense today is figurative: an earthshaking discovery, decision, or revelation is one that transforms how people think or live. The word can also be used literally for physical phenomena such as explosions or eruptions that actually tremble the ground, though this sense is less common. In register, it leans toward the emphatic and journalistic, lending drama to news writing and commentary, while in everyday speech it is sometimes deployed ironically — describing something trivial as 'hardly earthshaking' to underscore its unimportance. Derived from the concrete imagery of an earthquake, the word conveys both magnitude and disruption, making it a vivid choice whenever ordinary terms like 'important' or 'big' feel insufficient. It pairs naturally with nouns such as news, discovery, event, and change, and remains a useful intensifier for marking genuinely pivotal moments.
Having enormous importance, impact, or consequence; momentous.
"Her earthshaking announcement reshaped the entire industry overnight."
Often used with an ironic or understating tone in casual contexts.
Literally shaking the earth; resembling or characteristic of an earthquake.
"An earthshaking rumble preceded the avalanche."
When scientists say a finding is earthshaking, they mean it figuratively — but the word originally described things that could quite literally rattle the ground beneath your feet.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of earthshaking
Earthshaking is a transparent English compound formed from 'earth' (Old English 'eorthe') and 'shaking' (from Old English 'sceacan,' to shake), with its sense modeled on the earthquake — a phenomenon that visibly shakes the ground. The word emerged in English by at least the seventeenth century, first carrying a literal sense before developing its figurative meaning of momentous or world-altering importance. It shares its roots with related compounds built on 'earth,' such as earthquake and earthbound, all drawing on the same Germanic base rather than Latin or Greek origins.
How earthshaking is actually used
The word is slightly formal or emphatic in tone and often appears in journalism and commentary to lend weight to an event. It frequently carries a hint of exaggeration or irony in casual speech, as when someone calls a minor piece of gossip 'not exactly earthshaking.'
Easily confused with earthshaking
Heartbreaking means causing intense sorrow or grief, whereas earthshaking means having enormous impact or consequence.