Definitions

seismic

[sahyz-mik, sahys-] / ˈsaɪz mɪk, ˈsaɪs- /

ADJECTIVE

pertaining to an earthquake or event within the earth's crust

Synonyms

STRONGEST

basaltic tectonic

STRONG

quaky quivering tremorous tremulous vibrational

WEAK

earthshattering groundbreaking profound tumultuous

Antonyms

STRONGEST

ethereal insubstantial subtle vaporous

STRONG

constant fixed motionless placid solid unchanging

WEAK

frivolous inconsequential insignificant superficial trivial

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The balance of power among AI frontier labs is undergoing a seismic shift yet again, as OpenAI finds itself fending off challengers in a race that it once dominated alone.

From MarketWatch

And while a World Cup semi-final against cricket's superpower is seismic in its own right, this is one that could decide the direction of the next two years of English cricket.

From BBC

John Jurgensen has reported on the entertainment world for The Wall Street Journal for nearly two decades, covering Hollywood and other sectors undergoing seismic changes.

From The Wall Street Journal

If the takeover goes through, it would be a seismic shift for the entertainment industry, giving Paramount ownership of Warner, HBO and many popular cable networks including CNN.

From The Wall Street Journal

Amid this seismic shift looms an existential question: Can those cities survive without them?

From The Wall Street Journal