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/ˈmadstəʊn/ · noun
(US) A stone believed to have the power to heal the bite of a rabid or venomous animal..
I gathered my things and asked the Negroes to return the scalps they'd stolen, along with my madstone.
Use madstone when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Madstone means (US) A stone believed to have the power to heal the bite of a rabid or venomous animal..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
I gathered my things and asked the Negroes to return the scalps they'd stolen, along with my madstone.
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