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.

Goodspeed travels back to the 18th century to downturns in the U.S. and the United Kingdom to explain why the common narrative that one seismic shock will flip an economy on its head is wrong.

From Barron's • Apr. 3, 2026

Woods’s contributions to the game of golf are seismic, but he doesn’t need to be reminded of that for a while.

From The Wall Street Journal • Mar. 29, 2026

Previous studies based on seismic recordings suggested that earthquakes like this may involve a pulse-like rupture and slightly curved motion along the fault.

From Science Daily • Mar. 27, 2026

Silicon Valley is reeling from the seismic verdict delivered by an LA jury on Wednesday.

From BBC • Mar. 27, 2026

A seismic voice, a volcanic breath, the roar of a cataclysm broke out in the center of the crowd with a great potential of expansion.

From "One Hundred Years of Solitude" by Gabriel Garcia Marquez