# aftershock

/ˈæftɝˌʃɑk/ (US) · /ˈɑːftəʃˌɒk/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/aftershock
Updated: 2026-10-19

## Definition

a smaller earthquake that happens after a big one, in the same place. You feel it days or even weeks after the main quake.

For teachers: a smaller earthquake following the main shock of an earthquake sequence, occurring in the same fault zone. Typically decreases in magnitude and frequency over time.

## Examples

- We feel a strong aftershock after the earthquake.
- Rescue teams pause their work when an aftershock shakes the damaged building.
- Geologists monitor the fault for weeks after the main quake, knowing each aftershock can weaken already damaged structures.

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