Synonyms of mainstay in English:

mainstay


See definition of mainstay

noun

1‘agriculture was the mainstay of the economy’

SYNONYMS
central component, centrepiece, prop, linchpin, cornerstone, pillar, bulwark, buttress, chief support, backbone, anchor, foundation, base, bastion

2‘he is the mainstay of the Arsenal defence’

SYNONYMS
tower of strength, key player, sinew, right-hand man, right-hand woman, right arm, Atlas