— preposterously , adv. — preposterousness , n.
/pri pos"teuhr euhs, -treuhs/ , adj.
completely contrary to nature, reason, or common sense; absurd; senseless; utterly foolish: a preposterous tale.
[ 1535-45; praeposterus with the hinder part foremost. See PRE-, POSTERIOR, -OUS ]
Syn . unreasonable, excessive, ridiculous. See absurd .