Synonyms of cornerstone in English:

cornerstone


See US English definition of cornerstone

See UK English definition of cornerstone

See Spanish definition of pilar

noun

1‘the theory of natural selection is a cornerstone of biological thought’

SYNONYMS
foundation, basis, keystone, mainspring, mainstay, linchpin, bedrock, fundament, base, key, fundamental principle, main ingredient, central component, centrepiece, core, heart, centre, focus, crux, prop, backbone, anchor