Those antediluvian machines are a thing of the past!
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The word antediluvian is an adjective. It describes something
which is ancient.
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Royal Antediluvian Order of Buffaloes was created in 1822.
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The antediluvian drains were clogged so the rain flooded the
streets.
My grandmother's ideas about gender-role steryotypes are
antediluvian; she still believes that women should not have careers
and that men should never cry in public