rock the foundations of (something)

To impact something in a way that affects its very essence, especially concerning its values or beliefs. The death of her son rocked the foundations of her beliefs. The election of the outsider candidate rocked the foundations of the party, and led to a lot of soul-searching among its members.

See also: foundation, of, rock

See also:

shake the foundations of (something)
shake/rock the foundations of something
rock (something) to its foundations
shake (something) to its foundations
shake (something) to the foundations
shake something to the foundations
sum and substance
the sum and substance
go to the stake
in essence

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