grain of salt
noun phrase
variants:
or less commonly pinch of salt
Definition of grain of salt
: a skeptical attitude
—used in the phrase take (something) with a grain/pinch of salt I take the guidebooks with a grain of salt, preferring to follow my instincts.— Daisann McLaneThe malleability of memory … is the first reason why autobiographies should be taken with a grain of salt.— Judith Rich Harris
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