1. having great importance or significance; momentous
2. causing the earth to shake; producing seismic vibrations
Usage: literal sense

Examples

• The discovery of penicillin was an earthshaking breakthrough in medicine.
• Her earthshaking performance changed the course of theater history.
• The earthshaking explosion could be felt for miles around.
• Scientists made an earthshaking announcement about climate change.
• The earthshaking tremors from the construction site rattled nearby buildings.
• His earthshaking ideas revolutionized the field of physics.
• The earthshaking impact of the meteor created a massive crater.