IPA: /ˈjuːθkweɪk/
KK: /juθkwāk/
A significant change in society or culture that is driven by the preferences and actions of younger people.
The youthquake of the 1960s brought about major changes in music, fashion, and social attitudes.
Youthquake is a compound word formed from "youth" (from Old English "geogð", meaning young age or period of being young) and "quake" (from Old English "cwacian", meaning to shake). The term describes a significant cultural, political, or social change that is driven by the actions or influence of young people.
Think of the energy and influence of 'youth' shaking things up ('quake') in society, which is why 'youthquake' refers to a major change driven by young people.
No commonly confused words.