Usage examples (6)

• Soon, the idea of carrying multiple books around will seem antidiluvian.
• From under the sea they threw up gnarled roots like the limbs of some antidiluvian squid.
• They also quoted some antidiluvian Labour Councillor, who actually lives in a different constituency, who expressed his "disgust" at the MP's actions.
• Bending over the mark in the rock, nodding their heads together, pointing with their awkwardly accoutered arms, they looked like an assemblage of antidiluvian monsters...