adjective

seismic

seismic

The region has a lot of seismic activity.

The region has a lot of seismic activity.

The news caused a seismic shift in public opinion.

The news caused a seismic shift in public opinion.

((noun)) relating to earthquakes or of enormous proportions The region has a lot of seismic activity.

Synonyms: earth-shattering, monumental, tectonic

From Greek 'seismos' meaning 'earthquake'.

Think of a 'seismic' event as something that shakes the ground or an idea.

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