seismic shift

Definitions

A fundamental reorientation of a state of affairs.

idiomatic

Equivalents

Examples

“The seismic shift in Mexico began in 1810 with the movement toward independence from Spain.”

“For the republican movement, the acceptance of seats in a "partitionist" Assembly signaled a seismic shift in historical attitudes since the division of Ireland in 1921.”

“[T]he U.S. could be on the verge of a seismic shift, where it is possible to envision a time when it will no longer be the dominant economic superpower.”

“Baby boomers began turning 65 in January, heralding a seismic shift in demographics worldwide.”

CEFR level