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/ˈsaɪzmɪk/ · adjective
Related to, or caused by an earthquake or other vibration of the Earth..
seismic activity
a seismic area
With Spurs having avoided a seismic Cup upset, Newport's heroic display will be rewarded with a lucrative replay at Wembley.
But the most seismic change is the shift to being supportive of open access. In practice, most of the industry has collectively opposed this for the past 25 years. The Department for Transport has been particularly hostile, seeing it as little more than cherry-picking.
That the two leading candidates are women is seismic in a country imbued with machismo, where gender violence is rampant and the fight for women’s rights has been especially sluggish under the incumbent president, Andrés Manuel López Obrador, known as AMLO, who is limited by Mexico’s Constitution to one six-year term.
Use seismic when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Seismic means Related to, or caused by an earthquake or other vibration of the Earth..
Common synonyms include unstable, seismal.
The opposite depends on the specific sense.
seismic activity
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