Those antediluvian machines are a thing of the past!
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
Extremely old and antiquated
Millennia is a noun.
Adjective.
The antediluvian period.
Those antediluvian machines are a thing of the past!
Royal Antediluvian Order of Buffaloes was created in 1822.
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
Extremely old and antiquated
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is beneath
The part of speech for "answer" is a noun.
The part of speech for "explicit" is an adjective.
The part of speech for "unfamiliar" is an adjective.