variants:
or naïve
naiver; naivest
Definition of naive
b
: not previously subjected to experimentation or a particular experimental situation
made the test with naive rats
also
: not having previously used a particular drug (such as marijuana)
c
: not having been exposed previously to an antigen
naive T cells
3a
: self-taught, primitive
b
: produced by or as if by a self-taught artist
naive murals
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The Exceptions Quiz III
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- Which of these words does not mean "nonsense"?

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Merriam-Webster unabridged
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Time Traveler for naive
The first known use of naive was in 1614
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