to shake the foundations

Translations
потрясти основы
поколебать основы
подорвать основы
потрясти устои
поколебать устои
Definitions
To seriously challenge or undermine the fundamental principles, beliefs, or institutions on which something is based.
To cause the foundations of a building or structure to vibrate, shift, or become unstable.
Words
to

preposition
чтобы
shake

verb
потрясти
the

article or possessive pronoun
этот
foundations

noun
основы