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adaptitude

noun
adap·​ti·​tude | \ə-ˈdap-tə-ˌt(y)üd, a-\
plural -s

Definition of adaptitude 

: a special fitness : aptitude

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First Known Use of adaptitude

1806, in the meaning defined above

History and Etymology for adaptitude

blend of adapt and aptitude

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The first known use of adaptitude was in 1806

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